Shows I marathoned for weeks to either catch up with the current season (first marathon ever was Dexter back in 2009, then Weeds), or just to finally watch (or re-watch in its entirety) if they concluded.
30 Rock
Archer
Arrested Development
Avatar: The Last Airbender
Bates Motel
Bob's Burgers
Brooklyn Nine-Nine
The Comeback
Dawson's Creek
Dexter
Friends
Fringe