Live from New York, it's…Chevy Chase!

Sketches include ""Mr. Bill and Chevy,"" ""I Married a Monkey,"" ""Jello,"" ""Same,"" and ""SNL is Improving."" The All-Stars perform How Sweet It Is.

Live from New York, it's...Tim Meadows

Sketches include ""O.J. Simpson,"" ""Celebrity Jeopardy,"" ""Ed Grimley Goes To Heaven,"" ""Roxbury Guys,"" ""Barbara Walters Interviews Jackie Rogers, Jr.,"" ""The Gantner Family Workout,"" ""The Tinseltown Tattler,"" ""Martha Stewart's Topless Christmas,"" and ""Happy Holiday Tales.""

Sketches include ""Farley Gets Permission to Host,"" ""Morning Latte,"" ""Mary Katherine Gallagher,"" ""Matt Foley: Motivational Speaker,"" ""Goth Talk,"" ""The Sally Show,"" ""Monday Night Football Song,"" ""Superfans,"" and ""El Niño.""

Live From New York, it's...The Ladies' Man

Sketches include ""The Ladies' Man,"" ""The Yahtzee Party,"" ""Swill"" (rerun from season three), ""Male Knicks' City Dancers,"" ""The Quotable Caddyshack,"" ""Morning Latte,"" ""His Parents Were Eaten By Bears,"" ""The Third Eye Bookstore,"" and ""Steve Baxter, Hollywood Gynecologist.""

Lucinda Williams performs: ""Can't Let Go"" and ""Too Cool To Be Forgotten""

Live From New York, It's...Will Ferrell

Sketches include: Bush Warns bin Laden, Law and Order: Parking Violations Movement, Snotty Department Store Guys, Emmy Awards Pre-Show, Jarrett's Room, The Patriotic Co-Worker, The ""How Do You Say? Ah, Yes"" Show, The Approval Center, and The Porn Star Blind Date

Sum 41 performs: ""Fat Lip"" and ""In Too Deep""

Live from New York, it's... Andy Samberg!

Sketches include "A Message from Kevin Federline," "Veritas Ultrasound HD," "2007 National Douchebag Championships," "MacGruber" (three parts), "Jeremy and Sasha," "Fred Thompson '08," "America's First Colonists," "Rowlf & The Swedish Chef," and "Mad Joe Dixon."

Spoon performed "The Underdog" and "You Got Your Cherry Bomb."

Host and musical guest Justin Timberlake.