Seems like a I get these questions a lot lately. Anyway, here is a good link to remember.
SANS' nice bit on how to recover a dying drive.
Jan 6, 2009
Lifehacker has a great link to a blog with a the Ultimate List of Free Windows Downloads. There are some great tools listed. Anything from security and troubleshooting tools, to office and multimedia tools. Even a large assortment of screensavers and themes.