Just curious what games other people are playing... if any. Always looking to check out new titles that I perhaps otherwise would have skipped over. Here's my short list:
Boom Blox
Pretty cool puzzle game. You are presented with a configuration of blocks that you need to knock down by throwing objects at them. Not all block react the same way though, some just move, some explode, some explode when hitting other similar blocks, some just disappear and so on. It's entertaining both as a single and mult-player games. Supposedly Boom Blox Bash Party adds online functionality or something as well, but I haven't tried it out yet.
You, Me, and the Cubes (WiiWare)
In interesting puzzle title where you toss people (called Fallos) at a floating block and try to do so in a way that they don't fall off. You have to put a certain number of them on the platform within a certain number of time. Pretty interesting and entertaining.
Muscle March (WiiWare)
Thanks ickyb0d for the recommendation. OK, so I've only played this once, but it's pretty entertaining. The premise is that you're a body builder, and someone's stolen your protein powder. You need to chase them as they try to make their escape by smashing through walls while making muscle poses. You, of course, do this by making the same poses as them as you follow them through the terrain (which all kinds of wacky shit happens around you).
This is ignoring the givens of course; for me, this includes Guitar Hero and New SMB.
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RIAA Radar