My favorite Beast Mode moments are the short runs where he pushes the pile, or breaks through what looks like a done deal. Like the Giants game with CBJ playing QB and Marshawn pushed that pile of Giants 6 yards! That was amazing! And the Philadelphia game where he came out of the pile and scored a TD.
And then there are the ones where it looks like he is stopped, and he lunges forward for another yard or three. Love the man, love the way he runs and you can see the power in those legs in the way he walks. Amazing.