http://www.skullsecurity.org/wiki/index.php/Passwords

Google darkc0de.lst

Go through the JTR documentation for learning how to generate (brute-force) and mangle passwords in word lists.: http://www.openwall.com/john/doc/

If you need something higher-level, you can probably find John/JTR or general password cracking information on Security Tube.

password profiling tools like WYD, CUPP will help to make a custom password list against a target.
http://kaoticcreations.blogspot.com/2011/06/wordlists-password-profiling-with.html