Go ahead, try and guess the original medium for this one...

I'll tell you: Dry erase marker on my monitor.

"WTF!?" You ask? I did it with this spiffy program named ArtRage which just happens to be freeware. If you have a tablet (or tabletPC for that matter), I recommend you download artrage ASAP. (supports pencil, chalk, paint, marker and crayon with multiple roughnesses of canvas, as well as a tracing paper...thing.)

Okay, < /plug>.
umm...This is yet another of those random characters/sketches I keep telling you about, they just show up, then I like them, so I hit CTRL+S and just can't help myself.