Robin Williams' funniest late night moments

Robin Williams was a fixture on late night talk shows. Johnny, Jay and Dave loved having him on as a guest. AC360 takes a look back at the moments that are keeping us laughing.

Robin Williams always stole the show when he performed at the Comic Relief benefits. Bob Zmuda produced the series of charity specials. He explained to Wolf Blitzer why it was so important to Williams that the money benefitted the homeless.