I mostly play strategy games and obsess about them to the point where I have to finish them. If I am thoroughly bored though, there's really no point. That has only happened once, to date!

1999, started playing quake with my friends that were already "too good", and being utterly destroyed for years to come after that. Countless hours spent in a small room with too many computers, junk food and an awful smell. Good times. :)

For me personally, it's definitely Mario. :)