There exists a trilogy of complete Portguese live-action Pokemon fanfilms. That is all. (Subtitles available, and not the automatically generated kind; click the Subtitles/CC button on the video's lower right.) Playlist links: The Mysterious Virus. Destiny of a Hero. The Light of Hope Part 1, Part 2. (MLYT) [more inside]
Fan stories, like midrash, give voice to characters who aren't front and center in narratives as we've received them. Rabbi Rachel Barenblat, who blogs at Velveteen Rabbi, has published an essay in Transformative Works and Cultures on the parallels between fan works that fill gaps in pop culture stories and midrash used to fill gaps in the Torah.
An Icona Pop Parody for the tumblr-reblogging, fanfic-writing, livejournal-updating squeeing fandom masses "I Ship It!"
The Vocaloids,1 anime-like characters created for the singing synthasizer program by the Yamaha Corporation, have been capturing the imaginations of Japanese fans for more than a year. They've inspired and starred in a large body of fan-produced songs and animated videos,2 ranging from macabre to sorrowful to dramatic to humorous. [Massive MLYTP] [more inside]