The Cake that GLaDOS taunts you with in the game "Portal" from Valve, part of the Half-Life Series of Video Games, included in "The Orange Box".
Made Entirely by me, entirely in SketchUp 7, about 3 Hours work.
*Model Updated: 3/25/2010 13:02 -- I was making a twisted pillar and realised it looked like a candle, this reminded me to finish my work on the Portal Cake, so here is the finished model... I changed out the candle for the new one, and added the star-shaped candle holder after looking at the cake in detail (and taking several screenshots in the secret room on the final level of portal). I don't think I will be able to make it more accurate than this. *