To people who say stuff like, "I want a videogame console that just plays videogames." So, like, you want a phone that just makes phone calls?
The TV thing was kind of lame, but it was pretty sweet that you can just say "Xbox, go to CBS" and it'll change to that channel. And you can even flip between games, movies and TV just with your voice.
About the used games/backwards compatibility: No backwards compatibility. If they're smart, they'll make certain games available for download/streaming kind of like PS3 is doing. And it looks like when you get a new game, you register the game to your gamertag and if someone gets a "used" game, they have to pay a fee to register it to their name as well.
04/16 - Ringworm
04/19 - Trog
04/22 - Ghost
04/24 - Iron Reagan
05/13 - SLAYER