We watched Weird, the Weird Al biopic starring Daniel Radcliffe. It was moderately funny, mostly because it made no pretense of being factual. (Weird Al gets tired of writing parodies and releases his own original songs... the hit being "Eat It" which then gets ripped off by Michael Jackson.) Also, Jack Black does a stellar Wolfman Jack.
I thought the cleverest bit was a downward-spiraling W.A. staggering onstage in Florida: shirtless, drunk, and in leather pants - mimicking the infamous Jim Morrison concert. When he threatens to "whip it out," as the cops rush onstage and arrest him for lewd behavior it's revealed that he brought out his accordion.
Worth watching once.