Huge Gender Disparities: Prisoners and Deaths
In 2006, 93.1% of U.S. prisoners were male vs. 6.9% female (data here), meaning that there were 1,350 men in prison for every 100 women (see chart above). Interestingly, that is almost exactly the same gender distribution for occupational deaths in the U.S. for 2008 - 92.7% male vs. 7.3% female (see chart below, data here). Another fact is that 90% of motorcycle fatalities in 2005 were males (see chart below, source).
I think it's safe to say that there are huge gender disparities in criminal tendencies and risk-taking behaviors.