Daniel M. Wegner is the source for the stuff about the illusion of free will and of the unified self. He's got an article about the ironic process in mental control:

The possibility that there might be an ironic process in mental control is easy to grasp in the case of thought suppression. A person who is asked to stop thinking about a white bear, for example, will typically think about it repeatedly as a result.

Wasn't there a joke about that? He's got another related article about the Ironic effects of sleep urgency (in pdf form): the harder you try to sleep, the less you can. I like the way he puts his stuff online. Maybe I should do that.