Portal 2 has hidden interactive Super 8 teaser level

Hidden away in the Extras section of the Portal 2 main menu, there's a teaser for Super 8 , an upcoming film from J.J. Abrams, executive producer of the Lost TV series, and director of sci fi monser movie, Cloverfield. It's not a typical movie teaser, though, it's a short level created entirely in the Source engine. It's only a couple of minutes long. If you don't have Portal 2, you can see our playthrough in the video above.