Comment by iharris

Portal 2 reference:

http://www.youtube.com/watch?v=xeKMS62GrTI

Edit: It's clear that someone in NASA is a Portal fan - they sent a laser-etched image of Wheatley up with an HTV-3 resupply craft:

http://www.escapistmagazine.com/news/view/118637-NASA-Sends-...