video from PC to TV?

Is there a device which allows one to wirelesly display the screen of my PC on my TV (42 inch Panasonic VIESA plasma)? Something like the Squeezbox, but for video? I want to play PBS videos on my TV from my computer which is in another room. I'm not too concerned about picture quality; audio is my thing. But I thought someone here might be able to educate me on this. Thanks!

Slingbox might be the answer
I tried the X10,quality not that good but it was a older model