Last week, I had the oportunity to try both next-gen consoles for the first time, and this is my "kind of review":

Wii:
First its the wiimote, it feels funny take something that remembers a TV remote and use it for games, but anyway, is comfortable.
The game I played was Wii Sports (I was hopin to try Red Steel, Zelda , C.O.D.3 or Far Cry, but WTH...:roll:...), I select Tennis, and the feeling is funny, moving your arm back and forth... so funny.
Final thought: The Nintendo Wii is a blast of FUN, a console you can have for play games and laugh of yourself wen you look silly moving as the games orders...

PS3:
First the SIXAXIS, its... same... and diferent... The buttons (X, O, Square adn Triangle) feels soft, and the L2/R2 feels like triggers (thats good, for racing and FPS).
The game I played was NFS: Carbon, I ran a couple of laps in a random circiut (I believe that is one of the muscle car zone). Visually, its amazing (I haven't seen the 360 version), its a pleasant experience. The only thing I regret was that I cannot use the motion feature for the game.
Final thought: The Sony PlayStation 3 is a great console, makes a huge step from the model of PS2...