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.

Beverly Hills, 90210 ... 21 Jump Street ... The Facts of Life ... see where they rank on our list.

The bad news? Summer's almost over and it's nearly time for school again.

The good news? We've got just the thing to ease you into back-to-school mode: Our countdown of TV's 21 best school shows ever.

So sharpen your No. 2 pencil and dive in to see which series just make the grade and which ones are at the top of the class.

"This life has been a test. If this had been an actual life, you would have received instructions on where to go and what to do."-- Angela Chase

Say what you will about My So-Called Life: It was a pivotal show in American TV History. Although it was canceled after only two years and 19 episodes, when MTV picked it up and began showing it round the clock, it acquired a cult following that keeps it resonant even today.

Marshall Herskovitz and Edward Zwick, who count Thirtysomething and My So Called Life among their credits, are getting ready to premiere their newest project, Quarterlife. This one is a little bit different though, as it's not another conventional TV show. Instead, Quarterlife is a web based, advertising supported, series that will air on Myspace. The episodes will be about eight minutes long and follow the lives of a group of college friends that have just recently graduated.

(S04E20) Twenty episodes in, and I'm chomping at the bit to get to the Tony/Jeanne story. Credit to team NCIS that they have created an arc that has people waiting anxiously for a resolution. With that in mind, if you would have told me that we were going to get a stand alone episode that didn't get into any of the big seasonal stories, I doubt I would have been excited about it.

But then they went and did this. Bringing McGee's next book, "Rock Hollow," into the picture made for some great scenes. And those scenes were really what sold this one. The actual mystery was interesting, but more for what we learned about McGee and the new book than the actual whodunnit aspect. I thought they gave Landon away right off the bat when he recognized "Thom."