There’s a great article on motion-sensing controllers up on CNN today. I don’t agree with the article’s assersion that the Wii motion-sensing one-ups that in the PS3, since I think that the PS3’s technology is superior. But I can’t really get into how without breaking NDA’s. Bah humbug.
Anyway, they are designed for different tasks – I wouldn’t really want to use the PS3’s controller as a pointing device, since it isn’t shaped like one!