What's that Wireless HD thing called?

[Tommy B]

I remember reading about a wireless home entertainment device that connected to your home network wirelessly and allowed playback of pretty much any media file, including HD MOVs & WMVs.

What was it?

 

[Tommy B]

Thing is I'm moving into quite a large room where I'll have the PC at one end, and my TV at the other.

Having a 15M DVI>HDMI cable is out of the question, so would this thing allow me to watch any shared videos on my PC?