Name a successful comedian of the last five decades and chances are, they got their start on Saturday Night Live -- under the direction of Lorne Michaels. As SNL enters its 50th season, we share never-before-heard audio from Lesley Stahl's 2004 interview with the show’s famously private creator and executive producer, who allowed 60 Minutes cameras unique behind-the-scenes access. Stahl also spoke with Amy Poehler, Tina Fey and Seth Meyers as they pitched, wrote and rehearsed sketches up until 11:30 Saturday night. Plus, 60 Minutes producer Denise Schrier Cetta shares what it was like filming the same week as one of the most controversial musical performances in SNL history.