(Link Above)
Two genre defining games from completely different eras: Nintendo's Super Mario Bros. and Valve's Portal. These two games managed to give Platformers and First-Person Puzzle Games a solid place in the video game world. But what if Nintendo teamed up with Valve and recreated the famous Mario game with Portal gun mechanics?
http://www.youtube.com/watch?feature=player_embedded&v=SaoHMjS04vU
(video wont work on thread for whatever reason..)