If you ever used the wrong keyboard shortcut to delete something in QuarkXPress, this little fella would walk on screen and delete it for you. With his ray gun.
Update: I notice from my site stats that quite a lot of people search for this little guy every day. So, as a treat, I’ve recorded him at work. The video might not work for everyone though – I did it on a Mac and can’t be arsed to check it on a PC.
Update 2: You can get him on a t-shirt here