It's the Great Pumpkin, Duke Nukem!
Yesterday was Halloween here in the states, and in keeping with that theme, we were sent this fan submission today - it's a Duke Nukem pumpkin! Actually, Gabe Cantu sent in two of them! One is Duke in his classic pose from the box art from Duke Nukem 3D, and the other is the Duke radiation symbol!
These are very cool - click on either of the thumbnails below for a larger image. You can also check out more fan submissions at our fan stuff page. Lots of coolness there.