Gamer is the one game out of the bunch that I tell people about when they ask how Game and Wario is, and I always get positive laughs followed by intrigue. Gamer itself may not have much legs after the hour or so it takes to complete all stages of it, but it was such a rad mini game.
Also, Sketch alone was worth the price of admission. My roommates and I play it almost nightly with a few beers. The only downside is that you can't add your own words. But on the plus side, I think the game logs which words it uses into the save data, because in the few hours of playing, we've yet to see a repeat.