It was a busy political week, and two of the major TV news events were parodied on Saturday Night Live last night. Friday’s presidential debate was the focus of a lengthy sketch, featuring a return appearance by Chris Parnell as PBS’ Jim Lehrer. Interestingly, the NBC late-night show decided to take the Obama campaign’s cue, and portrayed its broadcast as if it was on CNN. After the jump, the show’s cold open, based around Katie Couric‘s interview this week with Gov. Sarah Palin (featuring a return from Tina Fey):



Click continued to see the Palin/Couric sketch…