Crotches!
Okay, okay, I couldn't get that far in the game (at least I think I didn't, I got to the robot) but I just have to say that firing cannons from your crotch is simply AWESOME!! I loved fighting all of those wacky Nazis and jumping all around getting powerups to get stuff for my crotch! It was a little hard with how easy it was to die, but overall a very nice game.