I got a Wii for Zelda/Wii Sports, and haven't plugged it in since the last time I moved. The 360 I play regularly, and haven't had any issues with it yet, and have downloaded various games/movies from Live as well.
I bought an HD DVD player for the 360, about 2 months before it was declared dead in the water. So after sitting around a few more months unable to get any new movies in HD, I finally bit the bullet and got a PS3 for the Blu Ray player. The only games I've played on it are MGS4 which came with it, and Uncharted, which I borrowed from a friend.
MGS4 is weird, and I've enjoyed and beaten MGS. I don't know if I'll finish it any time soon, it just doesn't grab me as fun. Uncharted is great. I've only played about a quarter of it so far, but I've enjoyed every bit of it. I haven't seen another exclusive game for PS3 yet that warranted me buying it, although I have bought several games from the PS3 store. Siren: Blood Curse, Super Stardust HD, and fl0w (which was underwhelming and short

).
The PS3 store has some nice exclusives, but they go out of their way to make it one of the most annoying interfaces to use. From searching for a game to actually downloading and installing. I've always been a Sony fan over Microsoft, I still have my pre-ordered PS2, and never owned an Xbox, as well as preferring the controller. But, overall, I still enjoy cross platform games on the 360. They tend to have a wider range of DLC, or at least more apparent DLC, along with the achievement system (haha trophys) and better integrated online functionality.
I'm still looking for a reason to buy a second controller for the PS3, although Super Stardust is almost enough. I want to see what co-op is like on that. Resistance 2 is probably the best exclusive on the horizon I can think of, although I haven't tried the first one yet. I hear Disgaea 3 is decent, but not sure if I'm in the mood for that currently.
So, right now my PS3 is a Blu Ray player with a couple downloaded games on it, and my 360 is a game console. The Wii is a paperweight.