I'm really really facinated by Garry's Mod. It seriously can be a pain in the butt sometimes with the difficult posing of lifeless ragdolls (amongst many other things), but the end result is either gained experience with the bajillion tools the program has or a really neat photo.
In tooling around with it today, I created a new in-game mode of transportation: THE HEAVY JET! Why? Simply because I could. Click on any of the below for the higher-res versions.
Of course, the Heavy Jet comes complete with a state of the art security system: Gun Mouth.
And a close up of the Scout riding the Heavy Jet.