Yeah, I love the dirty jokes too. When Hamlet talks to Ophelia of "country matters", he isn't talking about his rural residence. There are plenty of other good ones in the porter's scene of MacBeth and the pub scenes of Henry IV part one. What struck me once though, when watching "Pericles", (which is by no means a masterpiece), was that he seemed to know everything there is to know about people. Villains like Richard III and Falstaff can also ooze charm. It's all so plausible. Even Aaron, the almost comicallly bad villain of "Titus Andronicus" can win your sympathy and the end of all his misdeeds. So I think the key to understanding it is to watch what the characters do rather than what they say. Using that as my yardstick, the only really loathsome villain in the whole of Shakespeare is the truly appalling, egocentric Hamlet. I wouldn't want him for a mate!