Zach Galifianakis

Diamond geezer Olly Murs warms things up in the studio tonight when he pops in to give a live performance of Dear Darlin' for the ever-appreciative Carr. Also venturing into the chatty zone are former Corrie and jungle celeb Helen Flanagan, along with actors Zach Galifianakis and Ken Jeong - two of a handful of stars from The Hangover Part III who are doing the chat show rounds tonight - check out Graham Norton (BBC1, 10.35pm) for the biggies.