I love Boxee, I really do. It's a great concept! (using OSX version on a mac mini hooked to a TV, using iPod remote software)
Unfortunately I'm being botched up every step of the way. My latest complaint is a core usability issue. I'm trying so hard to watch South Park on Boxee, and every time I even slightly misclick on my remote, it completely takes me out of what I am watching with no clear way to start again, without restarting the show completely (meaning I have to re watch all of the ads).
It starts with this obnoxious ad issue - which I can only solve by constantly rapid-tapping the "OK" button on the boxee remote.
If I accidentally hit "down" then I'm kicked out. If I accidentally hit left or right the same thing happens. I've sometimes had it where the show continues playing in the background while the list of shows appears on front, with a "Now Playing" window somewhere, but I have no clue how to go back to what is currently playing (tapping "now playing" doesn't change what is on the screen)
Anyway, I don't have any hugely well thought out analysis so much as a general comment that the menu navigation while a show is playing needs to be completely re-thought. I should never exit my show without being warned that my show will be exited.