Freeware: JFileRecovery - Recovers files from damaged hard drives, CDs, DVDs and Flash media.

http://www.jfilerecovery.com/
JFileRecovery is a free Java Web Start application that can copy files
from damaged storage devices and media, skipping over problematic
regions that typically cause copying to fail. If the file is listed,
there is a good chance that JFileRecovery can salvage much of the data
with minimal corruption. For many media files such as MP3, MPEG, AVI and
JPEG, corruption is often not even noticeable.

http://www.kvipu.com/CDCheck/
CDCheck is a utility for the prevention,
detection and recovery of damaged files on CD-ROMs with an emphasis on
error detection.
With CDCheck you can check your CDs and discover which files are
corrupted. By using the program proactively, you can insure that
your data on CD-ROMs are safe -- before it's too late! CDCheck
provides the following features: readability verification,
binary compare, CRC file creation (and verification) and file
recovery.

O alta solutie: dvd decrypter cu setarile de aici:
http://forums.afterdawn.com/thread_view.cfm/124000