If you're bored but don't have much time, then a short one-shot is perfect!

Anime in this category are not part of a series and are all under 30 mins long. So specials connected with a series, like Chibits, aren't here, but Voices of a Distant Star is.

Short Anime Rating
Amazing Nuts! (OAV) Good
Ame to Shoujo to Watashi no Tegami (ONA) Decent
Ani-Kuri 15 (special) Good
(The) Animatrix (OAV) Good
Anoko ni 1000% (OAV) Not really good
Aquatic (movie) So-so
Aquatic Language (special) Good
Ar Tonelico (OAV) So-so
Babel's Book (movie) Good
Baby Blue (movie) Good
Baby Love (OAV) Decent
Bannō Yasai Ninninman (movie) Decent
Beyond (OAV) Very good
Blue Butterfly Fish (OAV) So-so
Broken Down Film (movie) Good
BUTA (movie) Good
Cannon Fodder (movie) Good
Cat Soup (OAV) Very good
Cherry no Manma (OAV) Not really good
CLAMP in Wonderland (OAV) Decent
CLAMP in Wonderland 2 (OAV) Good
Close the Last Door (OAV) Decent
Clover (special) Excellent
Comedy (OAV) Excellent
Connected (OAV) Good
Daicon films (special) Good
Deathtic 4 (movie) Decent
Detective Story (OAV) Good
(The) Diary of Tortov Roddle (ONA) Good
Digital Juice (OAV) Not really good
Dimension Bomb (movie) Decent
Doorbell (movie) Decent
Doozy Bots (U.S. TV) Not really good
Dore Dore no Uta (special) Good
Dottinisuru? (movie) So-so
Drop (movie) So-so
Egao (special) Decent
End of the World (OAV) Decent
Extra (OAV) So-so
(The) Final Flight of the Osiris (OAV) Good
First Kiss Story (OAV) Not really good
Four Day Weekend (OAV) Decent
Franz Kafka's A Country Doctor (movie) Decent
Gala (movie) Good
Genius Party (movie) Good
Girl from Phantasia (OAV) So-so
Good Morning Call (OAV) Decent
Happy Machine (movie) Good
Higan (OAV) Decent
Hiyokoi (special) Good
Hoshizora Kiseki (ONA) Decent
Ichigeki Sacchu!! HoiHoi-san (special) Decent
Jumping (movie) Very good
Kakurenbo - Hide & Seek (movie) Very good
Kid's Story (OAV) Good
Kikumana (movie) Decent
Kizuna Ichigeki (movie) Good
Kowarekake no Orgel (OAV) Decent
Kumo to Tulip (movie) Good
Labyrinth (movie) Decent
Limit Cycle (movie) Good
Little Witch Academia (movie) Good
Magical Chocolate (OAV) Decent
(La) Maison en Petits Cubes (movie) Excellent
Male (movie) So-so
Man & Whale (special) Good
Matriculated (OAV) Decent
Memory (movie) Decent
Mermaid (movie) Good
Moondrive (movie) Good
Mt. Head (movie) Good
Nakoruru (OAV) Decent
Neko no Shūkai (special) Very good
O-jii-san no Lamp (movie) Excellent
(The) Old Crocodile (movie) Good
On Your Mark (movie) Good
(The) Order to Stop Construction (movie) Good
Other Worlds (movie) Good
Pale Cocoon (OAV) Excellent
Panda! Go, Panda! (movie) Decent
Panda! Go, Panda!: Rainy Day Circus (movie) Decent
Portable Kuukou (movie) Good
Program (OAV) Good
Push (movie) Good
Quiz Magic Academy (OAV) Decent
Quiz Magic Academy - The Original Animation 2 (OAV) Decent
Running Man (movie) Decent
Second Renaissance (OAV) Decent
Self-portrait (movie - Osamu Tezuka) So-so
Shanghai Dragon (movie) Very good
She and Her Cat (OAV) Excellent
Shina Dark - Kuroki Tsuki no Ō to Sōheki no Tsuki no Himegimi (OAV) Decent
Shiranpuri (movie) Decent
Sora Iro no Tane (special) Good
Sora Tobu Toshi Keikaku (movie) Good
Space Station No. 9 (movie) Good
Superflat Monogram (movie) So-so
Table and Fishman (movie) So-so
Tansuwarashi (movie) Good
Time Stranger Kyoko (OAV) Decent
Tobira o Akete (OAV 1995) Decent
Tojin Kit (movie) Good
TWO-MIX: White Reflection (OAV Promo) Good
Voices of a Distant Star (OAV) Masterpiece
Wanwa the Puppy (movie) So-so
Wasurenagumo (movie) Very good
A Well-Ordered Restaurant (movie) Decent
Wish (special) Decent
World Record (OAV) Good
Yondemasu yo, Azazel-san (OAV) Good
Yonna in the Solitary Fortress (movie) Good