Figgered I might as well post couple of mine...
That one (like, unfortunately, most of my recent renderings) was actually done for work - it was intended to show off the armor and sword I had recently finished.
This is an oooold sculpt I had done (ignore the dirty fingernails, I had just come in from the yard, working, when I took the pic). A company I had connections with was going to try to make a 15mm scale tabletop wargame of Aliens vs Predators vs Marines. Unfortunately, the game fell through when the rights were determined to be a complete mess, and though they had been promised them, they could not secure them. That was intended to be an Alien Queen, pre-separated to be molded in three parts - the body, the crest, and the tail. I used Kneadite putty (aka Greenstuff) on a paperclip 'skeleton'.
This one is a link, because the image is just too big:
http://artzone.daz3d.com/index.php?/gallery/user/vi/&mid=117621&aid=1832
WARNING! NOT SAFE FOR WORK!
Click on the picture to see the full sized image.
This was actually an entry in a contest judged by Frank Frazetta Jr, to re-create his father's style in 3D. I made it to the top 30 (out of about 750 entries or so), but otherwise didn't place.