Aliens remains one of my favorite sci-fi movies, in large part because of the awesome (though mostly futile) hardware the Colonial Marines throw at the aliens. Havoc‘s version of the M577 APC is chock full of awesome:
This bad boy even has a full interior:
(Via Whippersnappers in the Void.)
The Aliens movies have spawned quite a few posts here on The Brothers Brick over the years: