http://speeddemosarchive.com/marathon/

Speed Demos Archive is bringing their very first speed run marathon - Classic Games Done Quick - to Magfest 8. AS the name suggests, they will be running a number of games from the NES/SNES/Genesis, etc. eras. And darn quick, too.

For those not going to the event, they will be streaming the whole thing on their website. They will accept donations to be given to charity. The tentative schedule is as such:

http://speeddemosarchive.com/marathon/schedule.html

By my count, they have 72 games to get through in their estimate of 54~ hours. Looks like the chain of "amateur" speed runner marathons that have cropped up recently have inspired the real deal to show them how its really done. Looks like it'll be a good time, although a lot of games will be blown through before you have a chance to notice.