Wheatley is in an observation room looking at a test chamber when suddenly a rail lift with a bird nest and a bird in it is seen through the window, and Wheatley screams BIRD! BIRD! BIRD! until it's gone. Then the lift comes back and he starts screaming again until it's gone, and it comes back...
Another idea is having a nest bounce on a faithplate when Wheatley is watching it and he screams each time it reaches the window.
TF2 BLU is tired of running away from RED when they conquered all their control points, and they're still on the run until they discover Aperture. They look inside and find a room with portalguns and stuff and find new things as they explore more. They decide to turn Aperture into their new base and they use Turrets and bombs and portals and other things to fight RED, and they finally manage to conquer their control points again.
What else do you think?

