Got my Pi online last night and to save cabling, I tried plugging the power cord into the USB port on the front of my DVR/Cable Box.
Much to my surprise, it worked like a charm. So, now I am using my 40" LCD/TV and the DVR to run my Pi. HDMI 1080i at 40" is AWESOME!
Anyway, if you have a DVR with a USB 2.0 port, give this a try. It saves from having an extra plug in the wall.
Happy Computing!
Bill Garber