There are tons of similar devices that offer Network Support....
For example:
D-Link Wireless Media Players Linksys Video
Though this sounds the best:
D-Link DPG-1200 PC-on-TV Media Player
Displays whatever is on your PC screen. Everything but DirectX stuff (aka gaming) is streamed to your TV. However it seems like video playback is only 640x480 yet the desktop resolution is 1280x720.