4. Chell's Science Project
Did anyone else think it was just slightly odd that there was a 'Bring Your Daughter to Work Day' included in Portal 2? The remnants of this rather bizarre event include what appears to be a Science fair featuring a number of alternative ways to harness power. As we progress through the room we're shocked at the discovery of a potato which has seemingly been allowed to grow over the millions of years since it was first placed there and subsequently has large roots going into the ceiling. But if you take a look at the board next to this item you'll see something quite shocking right in the corner. The project appears to have been designed by a girl named Chell.
Consider for a moment that this project is indeed the work of a young Chell. It meets with the requirements that her parents worked for Aperture (as hinted by GLaDOS) and is even more shocking when you think that their names apparently also began with the letter "C" - I'm not going to put this all together for you but if you've even been paying the slightest attention to what I've been writing then you should see the significance straight away. What's even more unusual is that this suggests Chell is responsible for the design which essentially saves GLaDOS programme from deletion for a large portion of the game. It's all a bit creepy isn't it?