Behold, A Very Potter Sequel:
The StarKid twenty-somethings, most of whom met at U-M's musical theater department, became an Internet sensation last year when they uploaded their hilarious original production, 'A Very Potter Musical', to YouTube for their friends and family to see. What they thought would reach maybe a few hundred people in their extended social networks has been literally uploaded millions of times by Harry Potter fans around the world.
Written by U-M friends and fellow 'Harry Potter' fans Brian Holden, Matt Lang and Nick Lang (script) and Darren Criss and A.J. Homes (score), the musical, which became one of the viral videos of 2009, catapulted the young performers, especially the ones who played Harry (Darren Criss), Ron (Joey Richter), Hermione (Bonnie Gruesen) and Draco (Lauren Lopez, yes, Draco is played by a girl), into a level of fandom stardom that's only slightly lower than the actual film actors. Considering the fan response, it's no surprise that Team StarKid regrouped and developed 'A Very Potter Sequel.'
Link - Thanks Brian Childs!