// Elusive and Font Awesome are two open-source #fonts containing over 200 icons each. They are geared to be used with Twitter Bootstrap but you can use them in any kind of project.
Check them out!
Elusive: http://bit.ly/VCtQ9B
Font Awesome: http://bit.ly/WatPZ5
If you need more #free choices, here some more in font and PNG formats: http://bit.ly/UKIqxA