Subverting the judicial process by lying under oath.
Does anybody here really believe that Hillary patched things up with Bill for reasons other than her ambition for political office? Staying married because getting divorced would be bad for "business" is hardly a feather in one's cap.
Well, aside from the light it shines on her character (which, frankly, doesn't bother me so much, since I already know that she's a ruthless, power-hungry, politician), the behavior of her husband is important because there is no doubt he will be something of a co-President. Would anybody really believe he won't be the most powerful man in the country again, if she becomes President? He might even be the most power person in the country (and the world) again, depending on how resistant Hillary is to his opinions.