Not long after I posted the other item about Marathon not being dead, this headline appears on Gamespot:
New casualty of marathon gaming
No Bungie products were involved, but it seems a man in Taiwan has died after a 32-hour gaming session. It was the second such occurrence, as another man in South Korea died after apparently gaming for 86 hours straight.
Take that as a warning; some marathons can be hazardous to your health. Now excuse me, I have to see a S'pht about a Juggernaut...