Summary: I bought one of these as soon as it was available. It has run like a champ for a couple years now. I use it as a media center computer. Very small and stays cool. It runs 24/7. I canceled my cable and phone. My family uses this computer daily for netflix, hulu, and magicjack. It looks good on a 36" screen and only a few times have I noticed any slowness attributable to the computer itself. Usually when watching something in HD.
Summary: I purchased this as the basis for a HTPC. I previously ran an Xtreamer but having seen XBMC on an AppleTV decided to give XBMC a go. I used the Revo as the hardware platform coupled with OpenElec as the OS. OpenElec is a seriously pared down Linux with only the components needed to run XBMC. Downside of this approach is that the machine is a dedicated media centre but the upside is that it runs like a dream.