I saw a cool site today: Speed Demos Archive . It features movie recordings of people playing games from start to finish as fast as they can. I think my personal favorite is:

Super Mario Bros. done in 5 minutes (using the world warps) and just under 20 minutes, playing all 32 levels.

I played a lot of Super Mario Bros. when I was much younger. And I finished it several times. But after watching these guys, I realized my skillz, they be lacking. And watching these people finish all these games I spent hours playing and finishing them with astonishing speed, I also wonder “is playing like that fun?”. I guess we all play for different reasons.