Also if you buy
PlayTV you can turn your PS3 into a PVR and record your favourite TV programs (to the PS3s hard drive) to watch at a later date, plus the usual abilities of being able to pause and rewind live TV.
This feature becomes even cooler if you also have a PSP as you can use the remote play function to watch live TV or any programs you have recorded from anywhere in your house on your PSP, or so long as you have your PS3 connected to a broadband internet connection you can actually watch TV anywhere in the world that your PSP can find and connect to an internet enabled wifi connection