Quote from Woody in What Is... Cliff Clavin?
Woody: Can I help you? Man: A beer, please. Boy, you can't go home again. You really know that's true when you come back to a place you haven't seen in 20 years. Woody: Or when you lose your bus pass. Man: Two decades ago, my job took me to Alaska. This is the first time I've been back to Cheers since the sixties. Woody: Really? Man: Ah, see those stairs? They used to go down the other side of that wall. Woody: Huh. Man: Hmm. And this floor, when I was here, it was all ugly green tile. Woody: Wow. Man: I guess everything changes in 20 years. They've even changed the paneling. Woody: Where? Man: Over there behind Norm.