I love the end credits to this game, Portal, part of the orange box of Half-life 2. I don't really like puzzle games so I've never played this, but they take the cake as far as end credits that I've seen go (pun so totally intended). As far as I can glean from cursory readings of descriptions of the game, you are some sort of guineau pig at the mercy of an AI computer that is convinced it is doing important research and breaking a few "eggs" in making its omelette. Along the way, the AI baits you with the promise of cake, but graffiti left from (presumably) earlier subjects insists that "The Cake is a Lie!" In the end, you break the AI into pieces and incinerate those pieces. The song is just so catchy!