Plot: Frank is (very loosely) based upon writer Jon Ronson's memoirs of playing keyboards in Frank Sidebottom's band. In the film Frank chooses never to take off his mask, leading new band member Jon to wonder who's underneath. Guest appearances: My favourite actor, Scoot McNairy stars in this, hurray! Michael Fassbender dons the head of Frank. Watch this if you're a fan of.. weird stories about outsider musicians Fun facts There is a documentary in the works about the real Frank Sidebottom (aka Chris Sievey) which hardcore fans of the musician may prefer Overall: Although the film started off well with lots of funny moments, it didn't seem to know where it was going and I didn't really enjoy the darker tone of the second half.