Blondie is breaking the forth wall and doing the impossible.
Portal 1 and 2 are some of my favorite video games and My Little Portal is a great watch. You should see the pony re-encated stuff it's pretty cool (by jjkmovies on YouTube). I think the Lord Of The Rings one is my favorite.

Portal Wiki > http://en.wikipedia.org/wiki/Portal_(video_game)
Portal site > http://www.valvesoftware.com/games/portal.html
My Little Portal 1: http://www.youtube.com/watch?v=i5f7zzkX1Nc
My Little Portal 2: http://www.youtube.com/watch?v=U4kvwj_YaWM
My Little Portal 3: http://www.youtube.com/watch?v=Z5HGnzQKLBc
My Little Portal 4: http://www.youtube.com/watch?v=7t-9dhgCYW4
My Little Portal Theme Song: http://www.youtube.com/watch?v=qM9IQ95iJlk
My Little Portal Comic that I found: http://br0ny.deviantart.com/art/My-.....rtal-207327713

This Applies to Commissions. If you would like your pony (or pony type thing) coming out of Portals Just ask away in the comments.