They're shakycam to the MaXx, but you can still see what's going on. The first videos of Gearbox's Aliens: Colonial Marines have been posted, showing a game that clearly involves shooting aliens.
Little else can be seen. There's a teaser trailer in the second movie, showing an alien egg opening. And that's your lot.
Game's out for PC, 360 and PS3 in the fourth quarter of this year.