Far Cry 2. I think people picking Far Cry 3 are looking back through rose tinted glasses, not recalling the second half of that game.
Far Cry 2 doesn't hit the same highs as Far Cry 3 but it is more consistent and burning down the whole world is never not fun.
Blood Dragon. I jump-laser-stabbed so many dudes. And then the end auto-scrolling bit was fantastic. That entire game was 110% in the "stupid awesome" category.
The Battle Armored Dragon Assault Strike System. Because of fucking course it would acronym to BADASS. "Your Killstar controls my braincage, instructing me that you are my rider." "And I shoot lasers out of my fucking eyes." (and then he shoots lasers out of his fucking eyes).