HTPC

[BarTopDancer]

I am looking for a small footprint PC to plug in to my TV and use as a media center. I want full internet to stream from network websites, Netflix, HuluPlus, Pandora blah blah blah. I do not want AppleTV or to go into the Apple product line (out of my price range). After further research Roku doesn't really fit my needs. A small footprint PC is really what I need. I am looking at Boxee but their live service isn't live yet and it's not clear if that is an extra charge or different box.

Suggestions? Dell killed the Zino line I was looking at but ideally it would be nearly identical to that.

What benefit does a TV Tuner card offer?

I want something pretty out of the box ready to go.