With Windows XP pro what services do you stop?

[Big-E]

I am curious, for security reasons, what services do you normally stop when hardening your OS? If you could put reasons beside each service that would be excellent, I am thinking about creating a security site and I am currently writing up some articles, I might even post it when I'm done, some people might find it useful. Also, this is for a standard computer not running a server of any kind, but do allow networking as most people have more then one computer now a days.