I use boxee on a HTPC and love it. Boxee is heavily based on the XBMC code base but adds hulu, netflix and other VOD streaming and a nicer (IMHO) interface. There is also a standalone boxee player, I don't have it, and there have been some problems with getting all the supported content on it, but I believe that is getting worked out.
I used XBMC for years, but boxee is just a nicer experience for an Internet connected HTPC imo.
I used XBMC for years, but boxee is just a nicer experience for an Internet connected HTPC imo.