A utility for Windows XP and Vista that makes it easy to reinstall your system because it hunts down and packages up every device driver installed on your system, zips them up, and asks you to save them off somewhere. After the reinstall, DriverMax will help you reinstall them.
Possibly the best collection of audiovisual CODECs for Win32 and Win64 out there. Widely reputed to have no malware or spyware hidden anywhere within.