Trick is getting their attention. 
It would be nice if we saw that in films.
Yes. BMS 4.33 has that I think - your pilot's head is connected to your view, so wherever you look, his head turns in that direction, and someone in an a/c next to your can see that.
WT has very cool pilot head movements - I've seen it in cinematics by Haeichi. The pilots look down at the instrument panel, then scan out the windows. Gunners heads also scan the sky. Very realistic-looking feature for cinematics.