Quote Originally Posted by Caius Flaminius
Well, my 2 cents to this
Ad-aware
A proficient anti-spyware application. Note that Ad-Aware does not have the immunizing functions of SpywareBlaster or Spybot. But we love it anyway.

It comes with Ad-Watch, a program who catches many changes in the registry and let you know whats going on.Also you can download add-ons, some useful and some not.
Ad-Aware is already on the list, Caius