Somehow after seeing the DS3 work with the PSP-Go over BluTooth, I'm suddenly thinking that they would make a touch-based controller that could work with a variety of devices, including the PSP-Go ... I know, totally crazy, but still - imagine you could use it with the PSP-Go, with your PS3 and as a universal remote type device in general?
Maybe you're talking about the PS3 chat pad. Touch screen, bluetooth, plenty of buttons to press.