That's pretty smart, and actaully pretty good for Sony. Even though people are saying thath the PS3 controller is better than the PS2 for things like FPS, I still don't think it is a good as the XBOX controllers. Now, by having this, some people who really like FPS can still enjoy them on the PS3.
Now all the system needs is a good FPS (this last part was said just to mess with Lizard)