Breaking Bad has the quintessential fan favorite graph, with a strong upward correlation each season. (Translation: it never left fans disappointed in the off-season).

Dexter rewarded long-time fans with a thoroughly disappointing finale.

Mad Men maybe lost a bit of glamour in its later seasons, but it's still a crowd pleaser every season.

I'm not gonna go back and check but I'll bet one of those two really low-scoring dots was that episode where Nikki and Paolo got buried alive. Sheesh that was goofy.

The best-rated ep of Game of Thrones thus far? The one with the Red Wedding.

West Wing suffered when Sorkin (and Rob Lowe!) left.

Everyone loves The Wire.

Oh yeah that's right, season four did kind of suck.

The Simpsons is not as great as it once was, but it's still pretty consistently good.

Twin Peaks falls off about halfway through season two, once goofy subplots like Super Nadine take over.

Friends was a show a bunch of people watched, right?

24 fell off after its first few seasons, but came back with a strong finale.