The plot for this new American comedy might sound like it's in the territory of 'The Hangover', which is unsurprising seeing as it's the directing debut of the writers behind that earlier hit and its sequel, Jon Lucas and Scott Moore. They've also written '21 and Over', which tells of a high-flying medical student, Jeff Chang (Justin Chon), who decides to go out and celebrate his twenty-first birthday on the night before a massive exam. I think we can all guess when happens next… But will there be a tiger in this one? And a cameo from Mike Tyson? We'll have to wait and see.