Fallon books U2 to play 'Tonight Show' opener

U2 are among Jimmy Fallon's first guests when he takes the reins of long-running US talk show 'The Tonight Show'.
The 39-year-old comedian will takeover from Jay Leno in February and he has landed big A-list guests for his first show, with the set to join him for an interview and the Irish rockers giving a musical performance.