Title says it all really!

There was a mod for oblivion that disabled the main quest and let you start out at random locations, as anything from a homeless person up to being well off with a house from the start.

This is perfect for us role players who just want to be a random person in the world and not have to bother saving the world. I know we COULD just ignore it, but it's not the same :]

I also pretty much liked the wastelands explorer quest (I think it was) for Bethesda's Fallout which let you have doing nothing, just what you want, for your main quest.