Can you tell I'm not getting much work done? Anyway, consider this your 15 minute break of the day.
5 minutes to build and construct the dragon; 10 minutes to marvel at it. lol.
Check it out here:
http://www.grand-illusions.com/opticalillusions/dragon_illusion/
Download document here and follow the cutting instructions. (Mirror site to download PDF).
Enjoy the mind trip!
p.s.,
Kudos to Evan for sharing this!