Argh, looked at 2010 instead of career there. It is worth noting that Crawford's BB/K jumped tremendously in 2008 and has improved steadily since then.
Interesting, I'd like to see if he keeps it up through this year.
Man, Crawford's baseball-reference page is eye-opening. The similar batters through age 27 list is very impressive: Johnny Damon, Tim Raines, and #1 is Roberto Clemente.