I also like to use Norton Systemsworks clean sweep "smart sweep" when installing software.. it helps when you want to uninstall software that you install on windows but don't like. Its not perfect, but its does the job most of the time.
I hope Norton adds spyware removal tools...
(Maybe the people who write virus-scanning software and hard drive system tools should get together and put together a commercial product suite like Norton Systemworks. I'd buy it. Good idea?)