The Touhou M-1 Grand Prix is a series of CD/DVDs released by YELLOW ZEBRA wherein the characters from Touhou perform animated manzai skits. The project is built around a mock manzai tournament, also hosted and judged by the characters from the series.
You can find translation efforts ongoing over at Youtube. dgreater1 translated most of the 1st and 2nd GP but stopped afterwards. Furienify and and a few others have been subtitling the 3rd Grand Prix at the moment.
Subtitled Videos
1st Touhou M-1 Grand Prix (Reitaisai 4)
First Round:
- Scarlet Mansion (Remilia/Flandre)
- Yuyuko and Youmu (Yuyuko/Youmu)
- Kekkai Shoujo (Reimu/Yukari)
- Witch Doll (Marisa/Alice)
Finals:
- Witch Doll Finalist (Marisa/Alice)
- Scarlet Tsukkomi Finalist(?) (Reimu/Flandre/Cirno)
2nd Touhou M-1 Grand Prix (Comiket 73)
First Round:
- TeiReisen (Tewi/Reisen)
- PatchuMirin (China/Patchouli)
- Yakumo Chen (Chen/Ran)
- Hourai Teruyo (Kaguya/Eirin/Mokou)
Finals:
- Hourai Teruyo Finalist(?) (Kaguya/Eirin)
3rd Touhou M-1 Grand Prix (Comiket 75)
Judges: Yukari/Ran, Kanako, Suwako, Suika, Shikieiki/Komachi
Hosts: Eirin, Rinnosuke
Prize: Becoming the Main Protagonists
First Round:
- Wind Girl (Aya/Momiji)
- MikoMiko Spark (Reimu/Marisa)
- TewiKourin (Tewi/Rinnosuke)
- Yuyuko and Youmu(Yuyuko/Youmu)
- ("Marisa"/Alice)
Finals:
- MikoMiko Spark Finals (Reimu/Marisa) (Victors)
- (Tewi/Rinnosuke)
4th Touhou Grand Prix (Comiket 77)
Judges: Ran, Remilia, Reimu, Parsee, Kaguya
Hosts: Sanae, Rinnosuke
Prize: ???
Unsubbed Videos
4th Touhou Grand Prix (Comiket 77)
First Round:
- Satorin Okyuun (Satori/Okuu)
- WerePhoenix (Mokou/Keine)
- Goddess Oni Girls (Suika/Yuugi)
- Moriya Kero (Kanako/Suwako)
- Revival of the Defeated Combi Orin and Koishi] (Orin/Koishi)
Finals:
- Satorin Okyuun (Satori/Koishi)
- Revival of the Defeated Combi (Okuu/Orin)