The Electronic Frontier Foundation has posted a listing of all of the CDs that are believed to have Sonys wonderful (full sarcasm there) rootkit DRM. While the list may not be exhaustive the site instructs you in how to identify these tainted disks when browsing at your local music store.
You also want to make sure that you turn off autorun before you use one of these CDs in you computer.
Thanks to BoingBoing for the link.