[Cowabunga]

Wii has a couple of great games such as Super Smash Bros. Brawl and Super Mario Galaxy, but it also has tons of rubbish.
PS3 has MGS 4 and Resistance: Fall of Man both being great exclusive titles, and it also has big third party games such as Call of Duty 4, GTA 4 and Resident Evil 5.
PS3 is more powerful than the Wii, but the Wii has more inovative gameplay.
But, to be honest, none have really impressed me that much yet, both have alot of potential which they didn't take advantage of it yet. I'm not as interested as video games as I used to a couple of years ago, the few video games I have been playing lately are on SNES and Mega Drive, I am more interested in retrogaming at the moment.
I own Wii, don't own a PS3 and don't wish to, I'm more interested in Xbox 360.