Unfinalized DVD

These are a few programs that can recover data from damaged or unfinalized discs. I recommend IsoBuster for the former. Note that not all of these are free.

http://www.softwarepatch.com/software/cd-recovery.html

http://www.isobuster.com/

http://diskinternals.com/cd-dvd-recovery/

http://www.jufsoft.com/badcopy/udf_recovery.asp

http://www.cdroller.com/