18. 'Parks and Recreation' (NBC)
There are so many bold maneuvers packed into that final episode. But for my money, the real shocker of the entire season is Leslie finally discovering Ron Swanson's sax-playing, sonic-love-making alter ego Duke Silver. Why didn't he tell her about his music earlier? "Playing music is something I like to keep private. Along with my family, my conversations and my whereabouts at all times."