Hey, I was surfing the web when i fould this thing called Garry's Mod. It lets you screw around with the amazing physics engine of Half-Life 2. You can spawn all of the characters and stuff and position them they way you like. Personally, I found it a great time *cough* waster *cough*. here are the links of some things you can do.
http://img.villagephotos.com/p/2005-...arneyalyx2.JPG
http://img.villagephotos.com/p/2005-.../barneykik.JPG
*I promise its no spy ware or anything like that.