This is not an exhaustive list, just my recommendations.

Furiko Film
3 min
The House of Small Cubes Film
12 min
Little Witch Academia Film
26 min
Moses Supposes Film
2 min
Space Patrol Luluco Series
7 min x 13 eps

Though its not necessary, watching specific shows before watching Space Patrol Luluco can enhance the experience. The shows being Kill la Kill, Inferno Cop, Little Witch Academia, and SEX&VIOLENCE with MACHSPEED (Episode 14 of the Japanese Animator Expo)

Tonari no Seki-kun Series
7 min x 21 eps
Mizu no Kotoba Film
9 min
Honobono Log Series
2 min x 10 eps
Shashinkan Film
16 min
Kanamewo Arthouse Music video
5 min
Japan Animator Expo Anthology Film Music video
7 min x 35 eps
Konohana no Sakuya Mori Arthouse
11 min
Growth Factor Film
6 min
Inaka Isha Arthouse
21 min
Dareka no Manazashi Film
6 min
Yodomi no Sakagi Arthouse
10 min
She and Her Cat: Everything Flows Series
7 min x 4 eps
The Ballad of Suicide Music video
4 min
Rain Town Music video
10 min
Batman: Gotham Knight Anthology Film
12 min x 6 eps
Blade Runner: Black Out 2022 Film
15 min
Shiranpuri Film
24 min
A Piece of Phantasmagoria Arthouse Series
5 min x 15 eps
Airy Me Arthouse Music video
5 min
I Can't Understand What My Husband Is Saying Series
3 min x 13 eps
Cencoroll Film
26 min
Koko ni Iru Film
2 min
00:08 Arthouse
5 min
Crazy for It Arthouse
3 min
Otona Joshi no Anime Time Anthology Film
25 min x 4 eps
Shelter Music video
6 min
Aiura Series
4 min x 12 eps
Anemone Arthouse
5 min
The Diary of Tortov Riddle Arthouse Series
3 min x 6 eps
There She Is! Series
5 min x 5 eps
playground Film
5 min
Death Billiards Film
25 min

Death Billiards was released prior to (and is what led to the creation of) Death Parade. You can watch it before or after Death Parade.

A Gum Boy Arthouse
3 min
Ryoutei no Aji Commercial
1 min x ? eps
Nerenai!!! Arthouse Music video
5 min
L’Œil du Cyclone Arthouse
4 min
The TV Show Music video
3 min
Twilight Q Anthology Film
30 min x 2 eps
COPY Arthouse
1 min
A Branch of a Pine Is Tied Up Arthouse
16 min
Worku Arthouse
11 min x 2 eps
Wonder Arthouse
8 min
Life no Color Arthouse
4 min
Hotohashiru Music video
4 min
Golden Time Film
21 min
Aitata Bocchi Arthouse
11 min
Daicon Opening Animations Series
5 min x 2 eps
Mitsuami no Kamisama Film
28 min
Tonkatsu DJ Agetarou Series
9 min x 12 eps
Manie-Manie: Meikyuu Monogatari Anthology Film
16 min x 3 eps
Scutes on my mind Arthouse
9 min
On Your Mark Music video
6 min
Girl Electric Music video
2 min
Way back to the Sea Arthouse
9 min
Kaijuu Music video
1 min
Samurai Noodles: The Originator Commercial
1 min
Pale Cocoon Film
23 min
She and Her Cat Film
4 min
Red Ash: Gearworld Film
23 min
Kicking Rocks Arthouse
5 min
Monotonous Purgatory Arthouse Music video
6 min
Nihonbashi Koukashita R Keikaku Film
1 min
Ikezu Music video
51 sec
Muybridge's Strings Arthouse
13 min
Feeling from Mountain and Water Arthouse
20 min
Kyou no Asuka Show Series
3 min x 20 eps
shake Arthouse Music video
4 min
Kanojo wa Zombie Music video
3 min
Ningyo Film
8 min
Anima Arthouse
4 min
The Old Crocodile Film
13 min
Oshiete! Galko-chan Series
7 min x 12 eps
Kujira no Chouyaku Arthouse
22 min
And And Arthouse
6 min
Land Arthouse
3 min
Ojisan no Lamp Film
24 min
Chuumon no Ooi Ryouriten (1991) Arthouse
19 min
Wasurenagumo Film
25 min
Isu Arthouse
10 min
HenSemi Series
12 min x 13 eps
Korekuraide Utau Music video
6 min
Harmonie Film
25 min
Anime Tenchou Commercial
2 min
Dance, Dance, Dance Music video
4 min
Hi no Youjin Film
12 min
Toyoichi Arthouse Music video
3 min
Thermae Romae Series
12 min x 5 eps
May Film
3 min
Atama Yama Arthouse
10 min
Egao Music video
2 min
DušaN Music video
3 min
Please Take My Brother Away Series
3 min x 12 eps
Mudai (Untitled) Film
7 min
Universe Music video
4 min
White Fantasy Commercial
2 min
Birthday Boy Film
10 min
Chainsaw Bunny Arthouse
6 min
Made in Japan Film
2 min
Iblard Jikan Film
30 min
Nowhereland Arthouse Music video
3 min
Norageki Film
24 min
Wasure-boshi Arthouse
5 min
Akuma no Kimuraa-hen Commercial
30 sec
fake!fake! Music video
3 min
Kyoto Animation Commercials Commercial
30 sec x 9 eps

MAL Links are ordered in chronological order, as is the playlist.

Onboro Film Film
5 min
Susume, Karolina. Film
3 min
Kono Danshi, Ningyo Hiroimashita. Film
28 min
Kick-Heart Film
12 min
Aki no Kanade Film
25 min
Calm Arthouse
7 min
Kingsglaive: FFXV Fan Kansha Tokubetsu Movie Commercial
1 min
Such a Good Place to Die Arthouse
3 min
Crystal Clear Music video
4 min
The Cockpit Anthology Film
23 min x 3 eps
Kobutori (1929) Film
10 min
Yama no Susume Series
3 min x 12 eps
Sweat Punch Anthology Arthouse
11 min x 5 eps
Master Blaster Arthouse
3 min
Mogu & Perol Film
8 min
Onkyo Seimeitai Noiseman Film
15 min
Himitsu Spark Music video
3 min
METROID Short Animation Film
54 sec
a reflection of one's mind Film
5 min
Kono Danshi, Mahou ga Oshigoto Desu. Series
7 min x 4 eps
little heart Film
5 min
Robotica * Robotics Film
10 min
Through the Windows Arthouse
3 min
The Legend of Shangri-La Film
14 min
lilac (bombs Jun Togawa) Arthouse Music video
4 min
Clover Film
6 min
Poulette no Isu Film
3 min
Senyuu. Series
4 min x 13 eps
Je T'aime Film
11 min
Push Film
4 min
Cornelis Arthouse
4 min
Tailenders Film
27 min
Moving Colors Arthouse
5 min
Transfer Music video
6 min
Robber's Company Series
5 min x 6 eps
Hashi no Mukou Film
10 min
663114 Arthouse
7 min
Super Seisyun Brothers Series
4 min x 14 eps
Memory (ONA) Film
7 min
Buta Film
24 min
Cross Road Film
2 min
Piece Music video
5 min
Cromartie High School Series
12 min x 26 eps
VIEW Arthouse
3 min
Fuyu no Hi Anthology Arthouse
1 min x 36 eps
Age of Obscure: Boubaku Jidai Arthouse
3 min
Yasashii March Music video
3 min
Koitabi: True Tours Nanto Series
7 min x 6 eps
Tengoku Music video
3 min
Towel Story Series
2 min x 4 eps
The Starry Night Music video
4 min
Survival Arthouse
4 min
Ai Monogatari: 9 Love Stories Anthology Film
10 min x 9 eps
Konoha Kaseki no Natsu Film
11 min
Yuureisen Film
11 min
Petting a Dog Arthouse
16 sec
Murder Film
10 min
Oruchuban Ebichu Series
8 min x 24 eps
Hana wa Saku Music video
4 min
Don't leave me Arthouse
2 min
Water Brain Film
14 min
Mori no Densetsu: Dai Ni Gakushou Film
11 min

Listed as a sequel on MAL, but it's only in spirit.

48x61 Film
6 min
Kid's Castle Film
4 min
Muramasa Film
8 min
Jumping Film
6 min
Two Tea Two Arthouse
3 min
Halfway Music video
5 min
Saiki Kusuo no Ψ-nan Series
5 min x 120 eps
Korekarasaki, Nando Anata to. Music video
4 min
Tsuki no Waltz Music video
5 min
Lupin III 3DCG Film
2 min
Arara Arthouse
1 min
Momokuri Series
12 min x 26 eps
Choujuu Giga Series
31 sec x 3 eps
Chi's Sweet Home Series
3 min x 104 eps
Around Arthouse
3 min
Obake no Dokurou Film
11 min
Kitsune Tsuki Arthouse
7 min
Inferno Cop Series
3 min x 13 eps
Go! Samurai Film
6 min
Tokyo Cosmo Film
4 min
Wakaranai Buta Arthouse
10 min
Dededen Series
1 min x 5 eps
SAI: Part 1 / Revolving... to the Core Arthouse
15 min
Hungry Days: Aoharu ka yo Commercial Series
30 sec x 6 eps
Baa-cha no Kingyo Film
8 min
Onikiri Musume Saisen Film
1 min
Kotatsu Neko (ONA) Series
1 min x 2 eps
Woman Who Stole Fingers Arthouse
4 min
Grim Arthouse
7 min
Nakedyouth Arthouse
9 min
Tabisuru Nuigurumi: Traveling Daru Film
10 min
Taneyamagahara no Yoru Film
27 min
Robot Carnival Anthology Film
10 min x 9 eps
Baja no Studio Film
21 min
Aimai Elegy Music video
3 min
The Animatrix Anthology Film
10 min x 9 eps
Kudan Film
9 min
Kaze no Matasaburou Film
22 min
Kono Danshi, Uchuujin to Tatakeamasu Film
28 min
Hairy Tale Commercial
1 min
Orchestra Arthouse
6 min
Coffee Break Arthouse
3 min
Sexy Commando Gaiden: Sugoiyo!! Masaru-san Series
8 min x 48 eps
The Ruined Planet Film
1 min
Koi Sento Film
25 min
Fumiko no Kokuhaku Film
2 min
Cockroach Calisthenics Film
15 sec
Blossom Music video
5 min
Tentai Senshi Sunred Series
13 min x 26 eps
Rinkaku Arthouse Music video
6 min
Kizuna Ichigeki Film
24 min
Children Arthouse
4 min
Nameless Flipbook Arthouse
2 min
Genius Party Anthology Film
14 min x 7 eps
Genius Party Beyond Anthology Film
15 min x 5 eps
Aggressive Retsuko Series
1 min x 100 eps
Chiruri Arthouse Film
8 min
Atarashii Sekai Music video
3 min
Koi Tsubomi Music video
2 min
Kakurenbo Film
25 min
Rec Series
13 min x 9 eps
Cluster A Film
3 min
Akai Ito Film
4 min
Mahou Shoujo-tai Arusu Series
9 min x 40 eps
Hoshi no Shita, Shonen no Hi Film
3 min
Tooi Sekai Arthouse
1 min
Maku Arthouse
5 min
Rumiko Takahashi Anthology Anthology Film
25 min x 13 eps
Buki yo Saraba Film
25 min
Yami Shibai Series
4 min x 13 eps

I only recommend the first season of Yami Shibai. The rest of the seasons don't retain the unique horror feeling.

Chisato Was Only Gazing Arthouse
5 min
KUROKO Film
4 min
Ookami Heart Music video Series
3 min x 2 eps
Ojisan to Marshmallow Series
3 min x 12 eps
Tokyo Loop Anthology Arthouse
4 min x 16 eps
Jin Sheng Yuan Music video
5 min
Omoi no Kakera Film
24 min
Tonari no Yarou Arthouse
9 min
Yondemasu yo, Azazel-san. Series
12 min x 13 eps
Kura Sushi Commercial Series
3 min x 2 eps
Super Kuma-san Film
20 min
Minion Music video
2 min x 2 eps
Fireball Series
1 min x 13 eps
Mirai no Watashi Commercial
1 min x ? eps
Kowarekake no Orgel Film
28 min
Parol no Miraijima Film
26 min
Binchou-tan Series
12 min x 12 eps
Hibi no Awa Music video
5 min
Ontama! Series
11 min x 5 eps
Memory Film
5 min
Ame to Shoujo to Watashi no Tegami Film
6 min
Heya/Keitai Arthouse
6 min
1001 Nights Arthouse
24 min
Pukapuka Juju Film
24 min
Pet-etre toi Music video
4 min
Fluximation Anthology Music video
1 min x 14 eps
Pupipo! Series
4 min x 15 eps
Amanatsu Film
14 min
Galo Sengen Music video
3 min
Teekyuu Series
2 min x 12 eps
Hoshi no Koe Film
25 min
Takane no Jitensha Film
24 min
Plastic Neesan Series
2 min x 12 eps
Tansu Warashi. Film
23 min
Yuri Seijin Naoko-san (2012) Film
28 min
the HIATUS Arthouse
3 min
Visions of Frank Anthology Arthouse
5 min x 9 eps
Attraction Film
10 min

Attraction is a interactive commercial. In it, you watch clips of anime, and then have to use either a webcam or just your mouse to advance the 'story'. You must enable Flash on the website; it doesn't ask. If you don't have Flash enabled by default on the website, it'll seem like theres no video there.

Halo Legends Anthology Film
16 min x 9 eps
Ainone Music video
1 min
Amazing Nuts! Film
10 min x 4 eps
Yume de Aetara Series
7 min x 16 eps
Ani*Kuri15 Anthology Arthouse
1 min x 15 eps
Yumedamaya Kidan Film
24 min
Aftermath Music video
5 min
Sekiranun Grafitti Music video
3 min
Taifuu no Noruda Film
26 min
Digital Juice Anthology Arthouse
3 min x 6 eps
Perfect Day Music video
4 min
The Four Seasons Anthology Film
8 min x 4 eps
Last Orders Commercial
1 min
Hana no Kage Film
7 min x 2 eps