It’s been a heck of a season for Saturday Night Live, one marked by big changes, that remarkable anniversary celebration, and a punishing schedule that kind of made it seem like the whole thing would never end. Too bad then that it’s finally over – at 21 regular episodes, this 40th season was actually a standard length, but SNL40 certainly made it seem literal hours longer – because the Louis C.K.-hosted season finale featured some of the most original and biting humor of the entire year.C.K.