The lack of DVD playback is kind of disappointing, but the system can't even play CD's :/

Personally, I've found Super Paper Mario and Mario Party 8 to be horribly underwhelming, and I couldn't recommend paying full price for either of them.

Wii Play is a solid bet because of the controller.

Personally, I like Rayman, Excite Truck, SSX Blur, and Zelda. Those will keep you occupied for quite some time.