The commercial makes it plain in the fine fine print (heh) that some sort of an an Intel TV adapter is required to make this work. It has a specific name which I don't rememebr. Check out the text on the screen next time the ad comes up... says something like "Intel <name> hardware required".
If your TV supports DLNA, and has a wireless LAN connection (like my Samsung LE46B750 LCD TV), then wireless streaming of video from a Windows 7 PC to the TV is possible without extra hardware (a.k.a. Windows 7 "Stream to" feature).
Several TV's like mine are also capable of connecting to the internet directly, for example with a dedicated built-in Youtube client. Browsing the internet with a internet explorer is not common afaik.
Using a Windows Media Extender makes streaming videos possible also (but only from a mediacenter pc), but mostly serves another purpose: that of leveraging the use of a windows mediacenter pc already connected to the main tv to other rooms like the bedroom.
For what it's worth . . . . .
In my experiments with trying to stream HD over a wireless connection - it simply doesn't work well enough to be watchable. That is true for 1080i and definitely 1080p. I did have some success with 720p over wireless, though it was not consistent enough. My wireless gear is decent. My wireless router is a D-Link DIR655 N Router. Even with a reported 270 Mbps wireless connection there would be jerking and drop-outs. My theory is that in spite of setting my router to find an unoccupied channel, which it does, there is so much interference from nearby sources, that the actual connect speed is more like 20-40 Mbps. When I do a WiFi scan, I get about a dozen responses. It seems my neighbors are all pretty high tech.
My solution was to replace my two main wireless links with Motorola MOCA boxes off eBay that were surplus from FIOS installations. I get a solid and true 100 Mbps connection and can stream anything I want at any speed. I even tried four simultaneous HD recordings coming from downstairs to my mid-level home office HTPC without a single hiccup.
Bye.
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