Just for context, the DirecTivo's (DirecTV boxes w. built in Tivo) can record two seperate shows and playback a third with no slowdown. But this is because they record the stream straight from the dish, so there is no mpeg compression (which means that when you watch a recorded show, the quality is perfect) so the processor only has to do one mpeg decode. I am amazed that non-SCSI hard drives can do all of that so quickly though!