The 2000 Year Old Man (1975 TV Movie)
Guest star Mel Brooks talks about it to Homer Simpson in the limo. Homer: Did you have a National Anthem back then? Mel Brooks: Yes, but we was Caves! Let 'em all go to Hell except for the boys in Cave 76!
Lorelai uses it as an example of Mel Brooks's greatness.
Mentioned by Jimmy when introducing Carl Reiner
Mentioned in dialog
Multiple clips are featured.