Well, I've not gotten to play much more on Bioshock or Metroid, but I have been playing the crap out of Warhawk. As its the only real game I've played on the PS3, I can definitely say this was a worthwhile purchase (though my wife gave me an earful on Saturday because she didn't think it was so worthwhile).
The motion controls are quite responsive and once you get the hang of it, its very intuitive and frees up the face controls for more advanced maneuvering. All in all, if this is the potential from Sony, I hope MS can come up with a similar game.
Also, on a much more personal note...NO MORE BEST BUY!!! 2nd Job is now the Masters program at UT Chattanooga. FREE TIME!!! (for studying)