I only learned about this game the day before its release, then won a free code for it from Microsoft on Twitter (thanks to a heads up from our own Wombat). It is the definition of a sleeper hit. Almost no hype whatsoever right up to release, and yet a great game out of the gate. Possibly one of the best multiplayer XBLA titles available, with all sorts of modes, including local (!) and online co-op. The single player pales in comparison, but it's fun and motivates you with unlockables you can use in the multiplayer. Achievements are challenging but not ridiculously so, and all appear to be obtainable with a reasonable amount of play time.
The 3D renders of the Peanuts gang are somewhat lame, but they only really appear in a cutscene or two (and Snoopy himself looks good in 3D). The rest of the production design is spot on, especially the great music (in particular, the relaxing Guaraldi-esque piano tunes that play behind the follow-the-leader missions).
I've only played for a couple hours total, but I can say without reservation that this game is easily worth 800 points. Great use of the license and quintessential XBLA title. Great job by Smart Bomb Interactive.
Now we just need to set up a CAG night.