I got a Treo 700p recently, and am having fun with the video portion. Since MPEG-4 video at 320 x 240 res takes up not too much space, I'd like to perhaps get a card that will connect to an old Directv receiver, act like a PVR, record my favorite shows, and encode them into 320 x 240 MPEG-4 and save them on the hard drive. That way, I can just drag and drop them into my Palm Desktop, sync, watch them, and delete. The Treo can use up to a 4GB SD card, so that's lots of room.
I found this at Newegg:
KWORLD VS-TV7133. Would this fit the bill?