Track Internet Activity

Hi, I am just wondering if there is a way for someone to be able to track the browsing history and/or general internet activity of someone on a computer, aside from cookies, history, and cache, which can all be cleared or deleted.
This question also encompasses, but is not limited to, non-browsing activities like torrent sharing.

For the life of me, I can't think of any other ways that people might be able to track this sort of thing, aside from keyloggers.

Are there any other ways which Windows XP tracks these things?

Thanks.

Jam it back in, in the dark.

Both actually.
I would like to know what people do with my computer when I am not around.
In addition, I am curious whether people might try the same thing with me.

You make it sound as if you are worried about releasing ZOMGTOPSECRET information into the wrong hands.

There's nowhere I can't reach.

Yeah, I am aware of these types of programs.
The problem is that most, if not all, can easily be seen and shut down by looking at the running processes tab in Task Manager.

What I really want to know is if Windows XP has some other built in features where these sorts of things are saved, aside from history, cookies, and cache.

This thing is sticky, and I don't like it. I don't appreciate it.

Yes, it is my computer.

There have been other situations where my curiosity has been fed. One in particular is a friend who was told by his dad that he shouldn't try to go to sites he might be ashamed of, because he has ways of tracking those activities in ways that my friend could not concieve of or detect. Granted, his dad is also a computer science wiz, so there is a good possibility of him writing a hidden program tailored to track this activity.

I am a dolphin, do you want me on your body?