Here are all the categories:
Record of the Year
"Nothin' On You" - B.o.B & Bruno Mars The Smeezingtons, producers; Ari Levine, engineer/mixer
"Love The Way You Lie" - Eminem & Rihanna Alex Da Kid & Makeba Riddick, producers; Alex Da Kid, Eminem & Mike Strange, engineers/mixers
"F*** You" - Cee Lo Green The Smeezingtons, producers
"Empire State Of Mind" - Jay-Z & Alicia Keys Angela Hunte, Jane't "Jnay" Sewell-Ulepic & Shux, producers; Ken "Duro" Ifill, Gimel "Young Guru" Keaton & Ann Mincieli, engineers/mixers
"Need You Now" - Lady Antebellum Lady Antebellum & Paul Worley, producers; Clarke Schleicher, engineer/mixer
Album of the Year
The Suburbs - Arcade Fire
Recovery - Eminem featured artists; Kobe, Lil Wayne, Pink & Rihanna, producers; Alex Da Kid, Boi-1da, Nick Brongers, Supa Dups, DJ Khalil, Dr. Dre, Eminem, Havoc, Emile Haynie, Jim Jonsin, Just Blaze, Mr. Porter & Script Shepherd, engineers/mixers; Brian "Big Bass" Gardner, mastering engineer
Need You Now - Lady Antebellum
The Fame Monster - Lady Gaga
Teenage Dream - Katy Perry
Song of the Year
"Beg Steal Or Borrow" Ray LaMontagne, songwriter (Ray LaMontagne And The Pariah Dogs)
"F*** You" Cee Lo Green, Philip Lawrence & Bruno Mars, songwriters (Cee Lo Green)
"The House That Built Me" Tom Douglas & Allen Shamblin, songwriters (Miranda Lambert)
"Love The Way You Lie" Alexander Grant, Holly Hafferman & Marshall Mathers, songwriters (Eminem featuring Rihanna)
"Need You Now" Dave Haywood, Josh Kear, Charles Kelley & Hillary Scott, songwriters (Lady Antebellum)
Best Pop Collaboration With Vocals
"Airplanes, Part II" - B.o.B, Eminem & Hayley Williams
"Imagine" - Herbie Hancock, Pink, India.Arie, Seal, Konono No 1, Jeff Beck & Oumou Sangaré
"If It Wasn't For Bad" - Elton John & Leon Russell
"Telephone" - Lady Gaga & Beyoncé
"California Gurls" - Katy Perry & Snoop Dogg
Best Rap Solo Performance
"Over" - Drake
"Not Afraid" - Eminem
"How Low" - Ludacris
"I'm Back" - T.I.
"Power" - Kanye West
Best Rap/Sung Collaboration
"Nothin' On You" - B.o.B & Bruno Mars
"Deuces" - Chris Brown, Tyga & Kevin McCall
"Love The Way You Lie" - Eminem & Rihanna
"Empire State Of Mind" - Jay-Z & Alicia Keys
"Wake Up! Everybody" - John Legend, The Roots, Melanie Fiona & Common
Best Rap Song
"Empire State Of Mind" Shawn Carter, Angela Hunte, Burt Keyes, Alicia Keys, Jane't "Jnay" Sewell-Ulepic & Alexander Shuckburgh, songwriters (Jay-Z & Alicia Keys)
"Love The Way You Lie" Alex da Kid, Holly Hafferman & Marshall Mathers, songwriters (Eminem & Rihanna)
"Not Afraid" M. Burnett, J. Evans, Marshall Mathers, L. Resto & M. Samuels, songwriters (Eminem)
"Nothin' On You" Philip Lawrence, Ari Levine, Bruno Mars & Bobby Simmons Jr., songwriters (B.o.B & Bruno Mars)
"On To The Next One" Shawn Carter, J. Chaton & K. Dean, songwriters (G. Auge & X. De Rosnay, songwriters) (Jay-Z & Swizz Beatz)
Best Rap Album
The Adventures Of Bobby Ray - B.o.B
Thank Me Later - Drake
Recovery - Eminem
The Blueprint 3 - Jay-Z
How I Got Over - The Roots
Best Short Form Music Video
"Ain't No Grave / The Johnny Cash Project" - (Johnny Cash) Chris Milk, video director; Jennifer Heath, Aaron Koblin & Rick Rubin, video producers
"Love The Way You Lie (Explicit Version)" - Eminem & Rihanna Joseph Kahn, video director; Maryann Tanedo, video producer
"Stylo" - Gorillaz, Mos Def & Bobby Womack Pete Candeland & Jamie Hewlett, video directors; Cara Speller, video producer
"F*** You" - Cee Lo Green Matt Stawski, video director; Paul Bock, video producer
"Bad Romance" - Lady Gaga Francis Lawrence, video director; Heather Heller, video producer