Billy Crystal on 'Tonight Show' recalls Robin Williams

Billy Crystal -- who gave a reasonably perfect tribute to his friend Robin Wiliams during the 66th Annual Primetime Emmys telecast -- spoke Thursday to Jimmy Fallon during "The Tonight Show" about his own feelings during and before the speech.

Among them: "I was afraid I wasn't going to get through it ..." In this clip, he and Fallon share memories of a bus trip to Washington, and Williams' comment to him during a speech by a former presidential candidate. (It's all very funny, but some of the language here is a little blue -- a warning to those who might be offended.) Readers on mobile devices can find the clip here: http://www.hulu.com/watch/689092