It's not easy winnowing more than 50 years of small-screen gems into a list of 50.

But AOL TV's picks of the top TV dramas include the most brilliant doctors and lawyers, the angst-iest teens, sci-fi series that transcend their genre molds, family dramas that both warm and break your heart, terrorist- and mobster-fighting heroes ... and a show that combined the best of family and gangster drama into one unforgettable series.

Click through to see all 50 of the best TV dramas of all time.