Live from New York, it's... Will Forte!

Sketches include "Bush Addresses the Nation," "MorganStanley," "The JetBlue Crisis," "Anderson Cooper 360," "The Couple That Should Be Divorced," "Girls Gone Wild Katrina," "Kanye Backstage," "The Lundford Twins Variety Hour," "Fun With Real Audio" (cartoon), and "Debbie Downer."

Kanye West performed "Gold Digger" and "Heard 'Em Say" featuring Adam Levine.

Live from New York, it's... Darrell Hammond!

Sketches include "Bush's Spontaneous Chat," "Butt Cancer Treatment Center," "Newsnight with Aaron Brown," "Dancers Party," "The Italians," "Access Hollywood," "Creighton Boys School," "Glen and Gina's Wedding," "MorganStanley," and "The Scheinwalds."

Franz Ferdinand performed "Do You Want To" and "Take Me Out."

Live from New York, it's... Will Forte!

Sketches include "Hardball," "JJ Casuals," "Good Morning Meth," "The Falconer," "Thomas & Dobbins," "The Soaking Wet Killer," "Refurbishments," "Butt Pregnancy," "Stachin'," "McNutly & Sons," and "American Tasar."

Foo Fighters performed "DOA" and "Best of You."

Live from New York, it's... the entire cast of SNL! (more or less) Sketches include "The Tree Re-Lighting," "West Bedford Drama Club," "Taco Town," "The Long Ride Home: The Jay Feely Story," "Wool Sweater," "Lettuce" (film), "Target Greatland," "24-Hour Coma," "Fight Back with Victor Santos," and "Morgan Stanley." James Blunt performed "You're Beautiful" and "Goodbye My Lover."

Live from New York, it's... Lindsay Lohan! Sketches include "The Situation Room," "Neutrogena Coin Slot," "Deep House Dish," "Journey to the Disney Vaults" (cartoon), "The O'Reilly Factor," "Le Rendezvous," "Laser Cats!" (film), "Debbie Downer," "Officemates' Night Out," and "Atlantic City Fever." Pearl Jam performed "World Wide Suicide" and "Severed Hand."

Live from New York, its... Al Gore! Sketches include "Parallel Universe Address from President Gore", "Techpack", "Horny Homeless Guy", "The Morning Show", "MySpace", "Charades", "Unsolved Mysteries: The Sandy Patterson Story", and "Peyote" (film). Paul Simon performed "How Can You Live In the Northeast?" and "Outrageous".

Live from New York, its... Rachel Dratch! Sketches include "Anderson Cooper 360," "A-holes at a Crime Scene," "Oprah's Legends Ball," "Carol!," "Fun with Real Audio" (cartoon), "Kevin and Andy Backstage," "The Falconer," "Andy Walking" (film), "Lord Phillip Sarc," and "I Do Not Agree With Many of This Administration's Policies." Nelly Furtado performs "Promiscuous" (featuring Timbaland) and "Maneater."

Live from New York, it's... Amy Poehler!

Sketches include "The All-But-Certain-To-Be-Next-President," "Angry Dog," "Penelope's Charity Auction," "High School Musical 3," "Iran So Far" (digital short), "Read to Achieve," "The Lyle Kane Show," "The Best of Solid Gold," "Ambiguously Gay Duo" (cartoon), "106 & Park," and "Great Moments in Guidance Counseling."

Kanye West performed "Stronger", "Good Life", "Champion", and an improvised version of "Everything I Am."

Live from New York, it's... Darrell Hammond and Amy Poehler!

Sketches include "The Clintons' Income," "Annuale," "Grease Rehearsals," "Kevin's Farewell Party," "Laser Cats 3-D" (Digital Short), "Excited Sue," "Walken Family Reunion," "Indoor Gardening Tips," "Top Chef," and "Larry King Live."

Panic at the Disco performed "Nine in the Afternoon" and "I Write Sins, Not Tragedies."

Mariah Carey performed "Touch My Body" and "Migrate" (featuring T-Pain).

Live from New York, it's... Fred Armisen!

Sketches include "Gadhafi's Second Speech," "Bladdivon," "Flight Attendants," "Russian Brides," "SWAT Commander" (Digital Short), "Grady Wilson's Burning Up The Bedsheets," "Live Lounge," "Biker Chick Chat," "Megan's Roommate" (Digital Short), and "Your Mom Talks to Megan Fox While You Get Ready."

U2 performed "Breathe," "Moment of Surrender," and "Ultraviolet (Light My Way)."

Former basketball star Charles Barkley comes back (after a 17-year gap) to host the first new episode of 2010; Alicia Keys (who last appeared on the first episode of season 27 with host Reese Witherspoon) comes back to perform "Try Sleeping with a Broken Heart" and "Empire State of Mind."

Sketches include "The Situation Room," "Thomas Peepers Insurance," "Reel Quotes," "MacGruber" (three-part sketch), "Shana at the Ski Retreat," "Inside the NBA," "Weekend Update" with James Carville, Nicolas Cage, and Governor David Paterson, "The Haney Project," "Digital Short: Alicia Keys' Booty Call," "Scared Straight," and "Barkley's Bank."