We always suspected Pikachu was a couple of rare candys short of a picnic and this video proves it. For some reason, this Super Smash Bros Melee video gets funnier the longer it goes on. And yet he still wins!
Here, Falco gets scared of the drop - and with good reason.
Finally, YouTube member SplitterSnake deserves credit for this comprehensive video compilation of the AI in Metal Gear Solid. There are some brilliant moments, like having 100% camouflage to crawl between a guard's legs several times and still get away unnoticed.