I can hardly believe that no one has said this but my favorite quote is "Otacon, what the hell?!" by Old Snake in MGS4, I LOL'd so hard!!

Actually, there is Garry's Mod 9 that is free, but that is not nearly as fun as garry's mod 10. Also the only way I have seen of obtaining the Gmod 9 installer is to get it pirated, but after that it gets added to your steam games list and you can launch it from there, so in it's own sense, it is free.