30 Rock had a pretty good Wikipedia joke in its last episode, Subway Hero. Here’s the setup: Tracy sticks a screwdriver in his CD player and has a near-death experience. While in the netherworld, Tracy meets Richard Nixon, and the spirit of our 37th president convinces him that a black man can, in fact, support the GOP. The scene below comes after Tracy and Jack preview a PSA that Tracy has recorded for Jack’s PAC, the Committee to Re-invade Vietnam.
The great thing about the joke is that Nixon seems like the kind of person who would have been really, really worried about what was on his Wikipedia page. And, of course, Tracy is the kind of guy who would try to update Wikipedia with a screwdriver.