Apple Mac Mini Anyone?
Whilst all these streamers, IPTV and other such like items are great, would not your money be better invested in a Mac Mini connected to a AV Receiver or actual TV itself if speakers are of any quality - maybe even a sound bar.
I've been using my Mac Mini as the heart of my AV set-up for over five years and only recently upgraded to a HDMI enabled Mac Mini that still comes with a optical drive.
Not wishing to sound like a Apple Fanbois - I hate iTunes - this set-up has been great.
I'm sure their are other single box PC's out there similar to Apple's little wonder - shame about the price though, but here in Hong Kong our Apple costs are among the lowest in the World.