This show is not listed in the print TV guides, but the chances are you have read online about it – as we witness the return of Sacha Baron Cohen. This seven-part comedy sees him taking on a range of characters to “explore the diverse individuals” in the USA across all politics and cultures. Among the people who have already admit to being “duped” by him is Sarah Palin, when Baron Cohen disguised himself as a disabled, wheelchair-bound army veteran. Elsewhere, Dick Cheney is apparently shown to agree autographing a faked water-boarding kit. Baron Cohen appears to be going where most comics would not dare. Who Is America? is on Channel 4 at 22.00.