PC - Win 7, ATi 5770, 6 gigs of RAM
TV - Philips 46 inch 5000 series

I have a 15" HDMI cable between the TV and the PC. TV has HDMI set as a "PC" device and this caused the picture on the TV to "shrink" down just a tad bit.

It works, but sometimes the screen will go blank and just say "HDMI 2" and "Computer" like it's losing signal. Tends to happen more often when I just have the desktop up. Was playing a full screen game duplicated between my monitor and my TV and it seemed to happen "less" but still happened a bit more.