Rocks. Implies that the subject is worthy of its existence. Also see roxor, l33t, h4x0r, qoolz, yuo.
Rocks, very good. Used in place of "that guy rocks", say "omg he r0x0r!!1" - mainly used in gaming discussion
Cool, awesome, especially rocks; used in 1337 5p3ak. Can be combined with hick talk.
hmm...lol i found it pretty darn r0x0rin ifn u ask me