Mario Kart Wii
What I said before about the game being hectic fun - as it turns out - does not always apply. As one might be able to derive from the game's "catch-up" formula of packing racers together, players who are losing are usually having more fun; which makes multiplayer awesome, since if you're playing with four people, at least three of them must be losing! This in turn means that winning is not incredibly fun, and has really not changed all that much from previous Mario Kart installments.
So while I'd heartily recommend Mario Kart for the party-game repertoire, and it's definitely the best in the series (the new level design is simply incredible), as a single-player venture it's not exactly what I'd call revolutionary. Granted, I've not yet tried getting into the online multiplayer.
Progress: 17 golds