The Caltech Prank Club transformed a sculpture of a cube into a Weighted Companion Cube, and attached this note.
(Doctor Who, Portal)
How Victorian Chell would survive those high falls. Created by Batman-n-Bananas.
The guy who did "This is Aperture" has come out with another "Portal" themed song parody.
Get Over Here and Play a Video Game
Ellen McLain reads a letter in GLaDOS's voice to Princess Celestia. Some vocal effects were added in later.