The PlayTV add on for the PS3 turns your PS3 into basically a DVR. You can watch live television as well as record shows to your PS3’s hard drive to watch later on your television or on your PSP.
I think this device looks awesome, I love the idea of having on set top box to basically do everything I want to do in my home theater. Unfortunately PlayTV isn’t coming to the US any time soon but if it did show up in the US it would sway me away from the Xbox 360 pretty darn quick.