Trailers for Games on an Idle Menu... Why?

I don't know why this bothers me, but I don't like it when a game has its own trailer running on an idle menu screen. 
 
MW2 is current example. It's looping away merrily on the TV as I type. I just think, why? I bought the damn game already. I'm sold. Done.
 
I understand it helps in stores as an eye blaster for demo stations or whatnot, but I'd like to see something you could tweak. Maybe highlights of high-level competition games or something like that. Killcam shots from top players, that sort of thing.
 
Whadduya think?

Idle menu? You mean like attract mode? I don't see why any game that isn't arcade style (like a fighting game) has an attract mode. I mean, what place do they have in home console games?

" It keeps your TV from showing the same static image, in case you for some reason forget to turn it off, preventing burn-in or a frozen game screen.  What an odd thing to be complaining about. "