What is boxee? Its something like firefox for tv. You will get your boxee box, plug it in tv and broadband connection and have a lots of predefined channels build on top of existing video APIs.
What is so revolutionary about it? Simple, it moves program selection from TV broadcasting companies to user. Today we have more then 500 useless channels on cable. This will, in long term, take power away from TV corps.
Its gonna be big punch to existing corporate capital pile!