1. David Tennant/Catherine Tate/Josh Groban/Jon Richardson
Aired: Apr 15, 2011Graham kicks off this season with the Tenth Doctor David Tennant and his form...
Graham welcomes ‘Water for Elephants’ co-stars Robert Pattinson and Oscar-winning actress Reese Witherspoon, plus Hugh Laurie (‘House’) and comedian Shappi Khorsandi.