If entertainment has taught us anything—be it films; TV shows; or films for people who hate fights and explosions, books—it's that at some point in every story, the villain will tell the hero, "You know, we're a lot alike, you and I." It always sounds like a really smart thing to say to somebody, even though it's never actually true.But now, for the first time, thinkingwithportals.com is giving you the opportunity toit true. Show them that not only are youGLaDOS, you'rethan GLaDOS, by designing your own diabolical test chamber.From now until June 6th, thinkingwithportals.com is accepting entries for their Summer Mapping Initiative . Test chambers will be judged on their puzzle complexity, visual appeal and tonal fidelity (50s design, contemporary design, etc.), so steeple those scheming-fingers, write some nasty passive-aggressive insults on index cards for easy reference, and show GLaDOS how it's done.