So is it like a theater mode? Like share an awesome game or something?
I also just heard that uncharted 3 has a "uncharted tv" did brink get copied on that or is it the other way around?

hmmm, havent heard about this before?

Brink TV is a fansite where people will be posting videos of competitive play.

Check the fansite sticky thread - it has some more info on them.

No word on in-game recording features or lack thereof, as far as I'm aware.