Celine Dion & GaGa - that's made my night.
Full list of winners:
Album of the Year: Fearless, Taylor Swift
Female Pop Vocal Performance: Beyoncé, "Halo"
Rap/Sung Collaboration: "Run This Town," Jay-Z, Rihanna and Kanye West
Rock Album: 21st Century Breakdown, Green Day
Record of the Year: "Use Somebody," Kings of Leon
Comedy Album: A Colbert Christmas: The Greatest Gift of All!, Stephen Colbert
New Artist: Zac Brown Band
Country Album: Fearless, Taylor Swift
Song of the Year: "Single Ladies (Put a Ring on It)," Beyoncé
Pop Performance by a Duo or Group With Vocals: The Black Eyed Peas, "I Gotta Feeling"
Pop Vocal Album: The E.N.D., The Black Eyed Peas
Male Pop Vocal Performance: Jason Mraz, "Make It Mine"
R&B
Female R&B Vocal Performance: Beyoncé, "Single Ladies (Put a Ring on It)"
Male R&B Vocal Performance: Maxwell, "Pretty Wings"
R&B Performance by a Duo or Group With Vocals: Jamie Foxx and T-Pain, "Blame It"
Traditional R&B Vocal Performance: Beyoncé, "At Last"
R&B Song: "Single Ladies (Put a Ring on It)," Beyoncé
R&B Album: Blacksummers' Night, Maxwell
Contemporary R&B Album: I Am...Sasha Fierce, Beyoncé
COUNTRY
Female Country Vocal Performance: Taylor Swift, "White Horse"
Male Country Vocal Performance: Keith Urban, "Sweet Thing"
Country Song: "White Horse," Taylor Swift
Country Collaboration With Vocals: "I Told You So," Carrie Underwood and Randy Travis
Country Performance by a Duo or Group With Vocals: Lady Antebellum, "I Run to You"
Country Instrumental Performance: "Producer's Medley," Steve Wariner
ROCK
Solo Rock Vocal Performance: Bruce Springsteen, "Working on a Dream"
Rock Performance by a Duo or Group With Vocals: Kings of Leon, "Use Somebody"
Rock Song: "Use Somebody," Kings of Leon
Hard Rock Performance: AC/DC, "War Machine"
Metal Performance: Judas Priest, "Dissident Aggressor"
Rock Instrumental Performance: Jeff Beck, "A Day in the Life"
POP
Traditional Pop Vocal Album: Michael Bublé Meets Madison Square Garden, Michael Bublé
Pop Collaboration With Vocals: Jason Mraz and Colbie Caillat, "Lucky"
Pop Instrumental Performance: Bela Fleck, "Throw Down Your Heart"
Pop Instrumental Album: Potato Hole, Booker T. Jones
RAP
Rap Performance by a Duo or Group: "Crack a Bottle," Eminem, Dr. Dre and 50 Cent
Rap Song: "Run This Town," Jay-Z, Rihanna and Kanye West
Rap Album: Relapse, Eminem
Rap Solo Performance: Jay-Z, "D.O.A. (Death of Auto-Tune)"
Urban/Alternative Performance: India.Arie and Dobet Gnahore, "Pearls"
DANCE
Dance Recording: "Poker Face," Lady Gaga
Electronic/Dance Album: The Fame, Lady Gaga
TRADITIONAL/ALTERNATIVE/WORLD
Alternative Music Album: Wolfgang Amadeus Phoenix, Phoenix
Americana Album: Electric Dirt, Levon Helm
Bluegrass Album: The Crow/New Songs for the Five-String Banjo, Steve Martin
Traditional Blues Album: A Stranger Here, Ramblin' Jack Elliott
Contemporary Blues Album: Already Free, The Derek Trucks Band
Traditional Folk Album: High Wide & Handsome: The Charlie Poole Project, Loudon Wainwright III
Contemporary Folk Album: Townes, Steve Earle
Hawaiian Music Album: Masters of Hawaiian Slack Key Guitar, Volume 2, Various Artists
Native American Music Album: Spirit Wind North, Bill Miller
Zydeco or Cajun Music Album: Lay Your Burden Down, Buckwheat Zydeco
Reggae Album: Mind Control—Acoustic, Stephen Marley
Traditional World Music Album: Douga Mansa, Mamadou Diabate
Contemporary World Music Album: Throw Down Your Heart: Tales From The Acoustic Planet, Vol. 3—Africa Sessions, Béla Fleck
New Age Album: Prayer for Compassion, David Darling
VISUAL MEDIA
Short Form Music Video: "Boom Boom Pow," The Black Eyed Peas
Long Form Music Video: "The Beatles Love—All Together Now," Various Artists
Spoken Word Album (Includes Poetry, Audio Books and Story Telling): Always Looking Up, Michael J. Fox
Musical Show Album: West Side Story
Compilation Soundtrack Album for Motion Picture, Television or Other Visual Media: Slumdog Millionaire
Score Soundtrack Album tor Motion Picture, Television or Other Visual Media: Up, Michael Giacchino
Song Written for Motion Picture, Television or Other Visual Media: "Jai Ho" (from Slumdog Millionaire), A.R. Rahman, Sukhvinder Singh, Tanvi Shah, Mahalaxmi Iyer and Vijay Prakash
Instrumental Composition: Married Life (from Up), Michael Giacchino
Instrumental Arrangement: "West Side Story Medley," Bill Cunliffe
GOSPEL
Gospel Performance: "Wait on the Lord," Donnie McClurkin featuring Karen Clark Sheard
Gospel Song: "God in Me," Mary Mary featuring Kierra "KiKi" Sheard
Rock or Rap Gospel Album: Live Revelations, Third Day
Pop/Contemporary Gospel Album: The Power of One, Israel Houghton
Southern, Country or Bluegrass Gospel Album: Jason Crabb, Jason Crabb
Traditional Gospel Album: Oh Happy Day, Various Artists
Contemporary R&B Gospel Album: Audience of One, Heather Headley
LATIN
Latin Pop Album: Sin Frenos, La Quinta Estación
Latin Rock, Alternative or Urban Album: Los De Atras Vienen Conmigo, Calle 13
Tropical Latin Album: Ciclos, Luis Enrique
Regional Mexican Album: Necesito De Ti, Vicente Fernández
Tejano Album: Borders y Bailes, Los Texmaniacs
Norteño Album: Tu Noche Con...Los Tigres Del Norte, Los Tigres Del Norte
Banda Album: Tu Esclavo y Amo, Lupillo Rivera
JAZZ
Contemporary Jazz Album: 75, Joe Zawinul & the Zawinul Syndicate
Jazz Vocal Album: Dedicated to You: Kurt Elling Sings the Music of Coltrane and Hartman, Kurt Elling
Improvised Jazz Solo: "Dancin' 4 Chicken," Terence Blanchard, soloist
Jazz Instrumental Album, Individual or Group: Five Piece Band—Live, Chick Corea and John McLaughlin Five Peace Band
Large Jazz Ensemble Album: Book One, New Orleans Jazz Orchestra
Latin Jazz Album: Juntos Para Siempre, Bebo Valdés and Chucho Valdés
CLASSICAL
Engineered Album, Classical: Mahler: Symphony No. 8; Adagio From Symphony No. 10, Michael Tilson Thomas and San Francisco Symphony
Producer of the Year, Classical: Steven Epstein
Classical Album: Mahler: Symphony No. 8; Adagio From Symphony No. 10
Orchestral Performance: Boston Symphony Orchestra; Tanglewood Festival Chorus, Ravel: Daphnis et Chloé
Opera Recording: Britten: Billy Budd, London Symphony Orchestra; Gentlemen of the London Symphony Chorus
Choral Performance: Mahler: Symphony No. 8; Adagio From Symphony No. 10, Laura Claycomb, Anthony Dean Griffey, Elza van den Heever, Katarina Karnéus, Quinn Kelsey, James Morris, Yvonne Naef and Erin Wall; San Francisco Symphony; Pacific Boychoir, San Francisco Symphony Chorus and San Francisco Girls Chorus
Instrumental Soloist(s) Performance (With Orchestra): Prokofiev: Piano Concertos Nos. 2 & 3, Philharmonia Orchestra
Instrumental Soloist Performance (Without Orchestra): Journey to the New World, Sharon Isbin
Chamber Music Performance: Intimate Letters, Emerson String Quartet
Small Ensemble Performance: Lang, David: The Little Match Girl Passion, Ars Nova Copenhagen & Theatre of Voices
Classical Vocal Performance: Renée Fleming, Verismo Arias
Classical Contemporary Composition: Higdon, Jennifer: Percussion Concerto, Jennifer Higdon
Classical Crossover Album: Yo-Yo Ma & Friends: Songs of Joy and Peace, Yo-Yo Ma
Surround Sound Album: Transmigration, Robert Spano, Atlanta Symphony Orchestra & Choruses
CHILDREN
Musical Album for Children: Family Time, Ziggy Marley
Spoken Word Album for Children: Aaaaah! Spooky, Scary Stories & Songs, Buck Howdy
OTHER
Instrumental Arrangement Accompanying Vocalist(s): "Quiet Nights," Diana Krall
Recording Package: Everything That Happens Will Happen Today, David Byrne and Brian Eno
Boxed or Special Limited Edition Package: Neil Young Archives Vol. I (1963–1972), Neil Young
Album Notes: The Complete Louis Armstrong Decca Sessions (1935-1946), Louis Armstrong
Historical Album: The Complete Chess Masters (1950-1967), Little Walter
Engineered Album, Non-Classical: Ellipse, Imogen Heap
Producer of the Year, Non-Classical: Brendan O'Brien
Remixed Recording, Non-Classical: "When Love Takes Over" (Electro Extended Remix), David Guetta featuring Kelly Rowland