A gaggle of posters

From Aeronova, behind the back!From Crazy Alien, a crazy human...
From Crazy Alien again, a crazy alien!
From T3h J00, "muahahahaha!" says Gravity!
From xXnintendorkXx, my favorite medal...

The Poster of Champions!

From Flame254, beware the glowy white afro of doom! From funkdude, a little-known part of a Spartan's training...
From muffin picka, truth abounds, although bullets are a little different than sticks...
From Sylux77, who needs physics?
From Sylux77 again, I dunno, it's very tempting...