Password Cracking
http://www.infosecisland.com/blogview/11968-Brute-Forcing-Passwords-and-Word-List-Resources.html (some links broken)
http://www.skullsecurity.org/wiki/index.php/Passwords
http://www.outpost9.com/files/WordLists.html (Best Dict dic-0294.zip )
http://trac.kismac-ng.org/wiki/wordlists
http://packetstormsecurity.org/Crackers/wordlists/
http://downloads.skullsecurity.org/passwords/ (at the root http://downloads.skullsecurity.org there is a folder containing download-able malware
http://www.isdpodcast.com/resources/62k-common-passwords
Crack MD5
http://www.vulnerabilityassessment.co.uk/onlinepw.htm
http://sites.google.com/site/reusablesec2/drcrack
Others
http://web.archive.org/web/20110606191246/http://contest.korelogic.com/wordlists.html
http://www.skullsecurity.org/wiki/index.php/Passwords
http://www.outpost9.com/files/WordLists.html (Best Dict dic-0294.zip )
http://trac.kismac-ng.org/wiki/wordlists
http://packetstormsecurity.org/Crackers/wordlists/
http://downloads.skullsecurity.org/passwords/ (at the root http://downloads.skullsecurity.org there is a folder containing download-able malware
http://www.isdpodcast.com/resources/62k-common-passwords
Crack MD5
http://www.vulnerabilityassessment.co.uk/onlinepw.htm
http://sites.google.com/site/reusablesec2/drcrack
Others
http://web.archive.org/web/20110606191246/http://contest.korelogic.com/wordlists.html