I don' t have much time to get into this at the moment but I didn't want to forget about the link. Forget Romeo - how old is Hamlet? The gravedigger's scene seems to tell us pretty clearly that he's about 30. Does that feel right? Wasn't he off at school? Isn't he still working out some issues with his relationship to mom? Doesn't everything else about the play make him feel younger?
The link above comes from the book, Hamlet : The Undiscovered Country, by Steve Roth. I can't seem to find any links to the book itself so I'm not sure if it's already published (perhaps a long time ago), or coming soon.