Vulture has a wonderful way to spend some time, they've compiled The 100 Jokes That Shaped Modern Comedy. Lots of video clips to watch.
A few notes on our methodology: We’ve defined ‘joke’ pretty broadly here. Yes, a joke can be a one-liner built from a setup and a punch line, but it can also be an act of physical comedy. Pretending to stick a needle in your eye, or pooping in the street while wearing a wedding dress: both jokes. A joke, as defined by this list, is a discrete moment of comedy, whether from stand-up, a sketch, an album, a movie, or a TV show.
For clarity’s sake, we’ve established certain ground rules for inclusion. First, we decided early on that these jokes needed to be performed and recorded at some point. Second, with apologies to Monty Python, whose influence on contemporary comedy is tremendous and undeniable, we focused only on American humor. Third, we only included one joke per comedian. And fourth, the list doesn't include comedy that we ultimately felt was bad, harmful, or retrograde."