That's pretty neat. I always enjoy going back to old games and doing "speed runs" to see how fast I can beat them.

Mario 64: 29 minutes (someone did it on 16 minutes but it was tool-assisted like via an emulator)

Donkey Kong Country: 1:02 (I need to try again, I know it's possible to go under 1 hour per Cranky Kong's advice!)

I'll have to try SMW now