Does everybody remember that amazing Portal 2 song set to the Nightmare Before Christmas? Of course you do! It was brilliant! Well video-maker Harry UK is at it again with another Portal 2/Nightmare mash-up song. This one isn’t as brilliant, and the Wheatley impression is far from perfect (how could it be?), but damn this is one creative and gifted dude. Listen and enjoy an amazing bit of geekery.