I Want
The House of the Dead: Overkill (Wii)

This immature, Mature rated title is just the gore covered dose of arcade-y fun the Wii needed.

I'm playing
Medal of Honor Heroes 2 (Wii)
The Wii Remote lends itself well to the aiming and to the online deathmatches. Too bad we can't say the same for everything else about the game.
Super Smash Bros. Brawl (Wii)
Four-player fighting returns with new characters like Wario, Pit from Kid Icarus - and yes, Solid Snake.
Resident Evil 4 Wii edition (Wii)
Capcom's survival-horror masterpiece does the motion-sensing shuffle