SpyBuddy is a surveillance tool that allows you to monitor exactly what activity is going on at your computer: "SpyBuddy allows you to monitor all areas of your PC, tracking every action down the last keystroke pressed. SpyBuddy has the ability to log all AOL/ICQ/MSN/AIM/Yahoo chat conversations, all websites visited, all windows opened and interacted with, every application executed, every document printed, every file or folder renamed and/or modified, all text and images sent to the clipboard, every keystroke pressed, every password typed, and more." It's free to try out, but if you want the full version, you'll have to pay (although the free version should meet most people's needs).
