A retrospective of the sketch-comedy series features a behind-the-scenes look at the making of a 2001 show hosted by Gwyneth Paltrow. Also: comments from creator Lorne Michaels, Chevy Chase, Will Ferrell, Darrell Hammond, Cheri Oteri, Ana Gasteyer, Molly Shannon, Martin Short, Chris Kattan, Adam Sandler, Tina Fey and Jimmy Fallon.