Why stop at movies?
You could turn the Black Sheep Squadron tv show (from the 70s - yeah, I just dated myself) into a nice campaign. You could also adapt the Wing Commander games into a good Aerospace Fighter centered campaign as well.
Any naval show/movie could make a good basis too. Have it be an assault dropship patrolling space like a submarine or surface warship.
As for mechs, not too many armor battle/tank movies. Probably have to refer to actual history there.
But, as for general players as infantry, spies, troopers, etc....any movie you can think of and more. We already have genetic engineering monsters, mad cults, cybernetic monstrosities, plotting nobles, etc, etc.