8. Pacman In Wolfenstien 3D
This has to be one of the most unexpected and slightly annoying Easter eggs of all time. You're playing the third episode of Wolfenstien entitled, "Die, Fuhrer Die!" and you've just reahced the secret level. Now being a faithful player you began combing the walls (or referencing a guide) to find the secrets. Like so many times before in this game, one secret leads to another secret. Then you reach a door and you switch to the chain gun because you've been in this position before (Hans Grosse waiting for you with his two chain guns). You hold your breath and open the door... and start laughing. Then before you know it, you've died because on the other side of the door is none other than the ghosts from Pacman. Seriously and if they touch you once you die... like in Pacman.