show filling in for jimmy fallon. he took shots at the president. here he was. >> folks, sexual harassment, sexual harassment, a big issue. people finally taking it seriously. in fact, scientists at northwestern university did a study about the differences between men's brains and women's brains. this is fascinating. listen to this. it seems women's brains are located in their head. this explains a lot. a lot of really talented and really accomplished actors have been accused of sexual harassment. also stephen segall. i was talking about this yesterday with my uber driver, kevin spacey. we were talking about it. hey, it's not just actors. matthew wiener, created the hit show "mad men" has been accused. when your last name is weiner,