I realize I'm like the last person in the universe to officially blog about this (its been tagged by 985 people on del.icio.us), but Bruce Judson has a fab book called Go It Alone! about taking the leap and starting your own biz--and you can download it and read it for free.
I was blown away by the first statistic he sites, which is that somewhere in the neighborhood of 56% of all Americans dream of starting their own business. Holy cannoli.
Forgive me for being cheesy, but eventhough I've already started my own business, I still really enjoy reading books like this. It reminds me of all of the reasons I decided to take the leap in the first place and I almost always learn something new.