Sifu - Wrath of The Master
When a young boy offends a martial artist by farting at his face every day, the offended kung fu expert sets out on a mission to kill him. The father of the boy, a master of kung fu, vows to avenge his son's death.
Full length movie that has an original story, introduction, dialogue, custom soundtrack and even endings.
It also utilizes the awesome Sifu Randomizer mod which allows different enemies to show up instead of pre-determined ones.