Just an interesting note about the PS3 controller not having a rumble feature that has become standard on all systems since the N64. Not a deal breaker, but an unusual deletion.
In 2004 Immersion sued Sony for violating rumble patents with their PlayStation controllers. Immersion believes that it is not impossible to have rumble in the PS3 controllers, and has offered solutions to Sony. Sony stated at E3 that the tilt functionality interfered with rumble. However, Immersion wants Sony to drop the appeal, and award Immersion the $90 million in damages before they’ll help Sony out.