Advice on Vidgames (Sqrl especially?)

We just got a Wii for my son Chris. I'm looking for good games to pick up for him. RPGs are the primary genre of preference; we will be getting the new sports one that's coming out in a couple weeks, and I may consider Punch_Out for nostalgia's sake. But I'm looking more for fun stuff he can play (and possibly I can, too) which lasts, which is generally RPGs.

We have already gotten the latest Zelda.