That one is a classic, too! Every time my friend and I have a really silly memory lapse we will say, "Hey! It's Tony Randall!" and it still cracks us up every time.
Granted, the one where he's on a date is quite funny too, and I had forgotten about it.
He's all why am I here? Then he starts in on his date, because he forgets he's on a date and doesn't remember who she is. Then he goes after the waiter, because he doesn't remember ordering and suddenly he gets food.
The funniest I think in that skit, was when he's eating the food, and suddenly he's all "I have food in my mouth...how did food get in my mouth", then spits it out and gets mad at the waiter for bringing him a plate of already chewed food.
Tom Hanks NEEDS to go back and do MORE comedy. He's good at drama, but I miss him SO much doing the comedy movies.