His real name is Marshall Mathers. "Eminem" comes from his initials, M.M.
He flunked the 9th grade and eventually dropped out of school.
Eminem has two daughters: Hailie Jade and Laney. Hailie is his biological daughter and Laney is Hailie's cousin (Eminem's ex-wife Kim's sister's daughter) who Eminem adopted. He sings about them being sisters in the song "Mockingbird" and they are both featured in the video for the song as well. (thanks, Jaimie - Telford, England)
Eminem was a member of the Detroit rap group D12 before he was famous. He still records with the band and released an album with them in 2001.
He was sentenced to probation, community service, and a fine for 2 incidents on the same day in 2000. In the afternoon, he pointed a gun at the road manager of The Insane Clown Posse, that night, he pistol-whipped a man he saw kissing his wife outside a nightclub.
He had trouble getting a visa to perform 2 shows in Australia in 2001. The Australian Prime Minister tried to keep him out, calling his songs "sickening and offensive."
For a while, he had a cartoon called "Slim Shady World" on the Internet and on DVD. He provided the voice of the title character.
Eminem's first album was called Infinite and it wasn't a big hit. He made it big with The Slim Shady LP. (thanks, luminita - fetesti, Romania)
When Em was at school, he was severely bullied because of his brown hair and buck teeth. (thanks, jade - gympie, Australia)
D12's original name was Soul Intent.
It was the Slim Shady EP that caught Dre's attention, that later was produced by Dre and became The Slim Shady LP.
D12 member Denaun Porter (Kon Artis) produced most of Eminem's first album Infinite.
Eminem's first ever UK gig was in Islington and setup by Paul H of Hiphop.com. (thanks, Drew - London, UK, for above 4)
Eminem has a younger half brother named Nathan. they are 14 years apart.
His mother, Debbie Briggs, has breast cancer. Eminem dissed his mom in the song "My Name Is" (thanks, Nikki - Brampton, Canada, for above 2)
People often picture Eminem as always in trouble with the police. His first arrest came when he hit a police car with a paintball gun, which was portrayed in a scene from his movie 8 Mile. (thanks, Narowin - Lincolnshire)
Eminem's win for Best Rap Album in 2004 for The Eminem Show made him the only Rap artist to win 3 times (previously in 2000 for The Slim Shady LP and in 2001 for Marshall Mathers LP). Instead of offering an acceptance speech when he won in 2004, he reeled off a long list of rappers who inspired him, including Ice Cube, Run-D.M.C., LL Cool J, 2Pac and Dr. Dre. (thanks, Bertrand - Paris, France)
EM considers Chris Rock the funniest man alive. His favorite character of his is Pookie from the movie New Jack City.
When he writes his lyrics, he starts at the corner of the paper and writes downward instead of writing on the lines. (thanks, Elma - Chennai, India, for above 2)
He drinks massive amounts of Diet Coke, but not out of cans. In his studio, he has a fountain dispenser, because there's no aspartame in the fountain.
He loves vintage video games, and is especially good at Donkey Kong. The movie The King of Kong is one of his favorites.
Starting in 2002, he became addicted to prescription drugs. He tried rehab in 2005, but it didn't take. In 2007, he overdosed on methadone and set out to get clean. His sober date is 4/20/2008.
He adopted his ex-wife Kim's daughter from a previous marriage Whitney, and the daughter of Kim's twin sister.
Despite his profanity-laced songs, Eminem does not allow swearing in his home. "I'm a parent; I have daughters. I mean, how would I really sound as a person like walking around my house [saying] 'Bitch, pick this up!' Profanity around my house, no," Em told 60 Minutes news anchor Anderson Cooper in 2010.