Passwords
Cain's password list, fairly big and covers a lot. File:List-cain.txt
John's password list, much smaller and more targeted/efficient. File:List-john.txt
List of passwords stolen from MySpace (not by me!), covers most common modern passwords. File:List-myspace.txt
List of passwords stolen from MySpace with associated counts (not useful for bruteforcing, but great for studying). File:Myspace-counts.txt
List of passwords stolen from PHPBB (not by me!), covers most easy to crack modern passwords. File:List-phpbb.txt
List of passwords stolen from PHPBB with associated counts (not useful for bruteforcing, but great for studying). File:Phpbb-counts.txt
List of "500 worst passwords of all time", from this story. File:500-worst-passwords.txt
All English words. File:English.txt
Another English word file, helpfully provided by BlackFrog File:English2.txt
The password list used by the Connficker worm File:Connficker.txt