Frank

This strange and delightful ode to artistic expression stars Michael Fassbender - though on first look you might not even realise it. He dons a large papier-mâché head to play the title character, who's based on the now-deceased, real-life cult entertainer Frank Sidebottom, the creation of musician and comic Chris Sievey. Writer Jon Ronson draws on his own experiences as a member of Sievey's band to tell the fictional story of a young keyboardist (Domhnall Gleeson, in a finely tuned performance) who falls in with a group of nutty alt-rockers, led by the artistic genius who refuses to show his face. Gleeson builds a strong following for the band on social media, albeit in secret given that band member Maggie Gyllenhaal (on snarling form) is vehemently antisocial. Director Lenny Abrahamson (Adam & Paul) generates plenty of laughs from the set-up, but wisely keeps the comedy understated. And despite his exaggerated, expressionless appearance, Fassbender subtly conveys the sadder elements of this story about a man whose head begins to weigh heavily on his shoulders.