BTW, that catchy little tune in the end is freakin funny -- as are so many of the comments from the computerized voice.
My fav was the one near the end where she was talking about turning back and remembering all the fun times talking like a teenager. And then you were like... And I was like... and it was so funny...
I'm curious if there have been any games like this previously. I was particularly fond of how the portal works in that you can see yourself on the other side depending on how you work the portal and such. Calculating all the angles, directions, and such in-game must have been an interesting challenge for the developers to be sure they didn't leave any areas that the user could trap themselves or throw the game off in some wacky way.