In another discussion, a comment was made that seemed to deserve a topic all it's own; here's the direct link to that comment
The gist of it is that "nice guys" tend to be passive, predictable, and boring, while "bad boys" are spontaneous, unpredictable, and exciting. Debate as we may, women tend to like the bad boys, largely for these reasons. Not because they're "bad," per se, but because they bring excitement and intrigue. I believe those are traits that ALL men, "nice" and "bad" alike, can embrace and cultivate.
The question I'm posing for discussion is this: How can we "nice guys" mix it up to become more spontaneous and exciting for the women in our lives?