This 2001 clip of Robin Williams on Inside the Actor's Studio is making the rounds today, for obvious reasons. In it, James Lipton asks Williams, "If Heaven exists, what would you like to hear God say when you arrive at the pearly gates?"
"The concert begins at 5. It'll be Mozart, Elvis, and anyone of your choosing."
He'd also accept God telling him a joke, just so he'd know that, if Heaven is real, there's laughter there.