What skills can a someone develop to become a great hacker?
JoshCole: I don't think I'm a great hacker so I'll pass on answering the question myself and point you to some other resources.- http://norvig.com/21-days.html 
 - http://catb.org/~esr/faqs/hacker-howto.html
 - http://paulgraham.com/gh.html (More Than Money)