I still play mine a lot. I haven't finished any of the games 100% yet. WarioWare is a lot of fun. It can be beaten prteey quickly but will require some replay to get 100%. Elebits is fun but it could offer better incentives to go back and complete the additional challenges after the first time through. Excite Truck takes a while to master and while the control shceme is difficult at first, it can be fun once you get used to it.
I also have to play through my virtual console games. The Wii still takes up every precious free moment that I have.
Games that I'm looking forward to include Super Paper Mario, Cooking Mama, and of course: Smash Bros, Mario Galaxy, and Metroid.