I've had a Wii for a year and a half or so. I really like it even though I don't have a ton of games (Wii Sports, Wii Fit & Metroid Prime 3). The best feature I think is the Virtual Console which lets me play some old games I loved and even try out some new ones (classic turn-based RPGs, etc.)
I'm also going to go ahead and admit to a guilty pleasure: I love watching the Nintendo Week 10-minute show on the Nintendo Channel. It's a good way to stay current on upcoming games and the hosts are fun.
I'm hoping to get a few games (New Super Mario Bros. Wii, Super Mario Galaxy, Mario Kart, Wii Sports Resort etc.) for Christmas so hopefully I'll have lots more fun to look forward to.