The Family Guy and Penny Arcade pics are right on. Calvin and Hobbes one is good. Pikachu's kind of cute. "Dale" in the Chip & Dale one was kind of good.
But the Homer Simpson one in the second link (below the Pikachu) scratched my eyes out.
If you don't know who the two characters in the last pic in the second link are (with the penguin and cat), you deserved to be whacked over the head with a newspaper.