Today's "Games that NEED to be on XBLA" is Toejam and Earl.
Toejam and Earl is pretty much the first true co-op game. Before TJ and E, games weren't so much co-op as they were "play the game at the same time with a friend." Toejam and Earl on the other hand offered gameplay that is both different and enhanced while played with a friend. The game practically begs to be online, with the added enhancement of not NEEDING to be splitscreen; forcing communication between players since they don't know where their partner necessarily is (assuming they split up). TJ and E would be PERFECT for XBLA.
SO RANDOM: Collect all Ship Pieces on Random mode.
Fixated: Collect all Ship Pieces on Fixed mode.
Dirty Trick: Open a ??? present, and die. Bummer.
SLAP: Share the love (and health) and high-five your partner.
Beatbox: Play in the beatbox mode for a total of 5 minutes.
Level 0: Soak in the hot tub, drink some lemonade; it's all good in the hood.
Wake Up: WAAAAAAKE UUUUUUUP!!!!!!!
BOOGIE BOOGIE BOOGIE BOOGIE: Kill a Boogie Man.
Social: Talk to every alien on Funkotron.
Funklord: Level up to the Ultimate in Funky.
PRESENTS: Use every type of present at least once.
Funky Allies: Enlist the aid of the Carrot, Wizard, Opera Singer, and Santa.
Let's pretend Toejam and Earl 3 never happened...