Comedy shows, movies, and standup that still hold up two decades (or more) later.
Many people claim that comedy ages poorly after a decade or so has passed, but I believe there are exceptions.
What older comedies do you still find funny?
In my opinion, off the top of my head, the following have aged really well:
Monty Python (series and movies)
Fawlty Towers
Blazing Saddles
Young Frankenstein (and most of Mel Brooks's filmography)
Planes, Trains & Automobiles
Uncle Buck
SCTV
3rd Rock From the Sun
Red Dwarf
Futurama
Dave Chappelle's '90s routines.
George Carlin
Bill Hicks
Richard Pryor
Lenny Bruce