Justin Timberlake performs on stage on day 29 of the iTunes Festival at The Roundhouse in London on Sept. 29, 2013.
Timberlake and actress Gemma Arterton laugh as they introduce the world premiere of the film "Runner Runner" at Planet Hollywood Resort & Casino in Las Vegas on Sept. 18, 2013.
This image released by 20th Century Fox shows Ben Affleck, left, and Timberlake in a scene from "Runner Runner."
Timberlake poses with the Michael Jackson Video Vanguard Award and the awards for Best Direction, Best Editing, and Video of the Year at the 2013 MTV Video Music Awards at the Barclays Center in Brooklyn, N.Y., on Aug. 25, 2013.
Timberlake performs during the 2013 MTV Video Music Awards at the Barclays Center in Brooklyn, N.Y., on Aug. 25, 2013.
Chris Kirkpatrick, Joey Fatone, Timberlake, JC Chasez and Lance Bass of *NSYNC perform during a reunion at the 2013 MTV Video Music Awards on Aug. 25, 2013.
Timberlake, center, stars in a scene from the Coen brothers' "Inside Llewyn Davis" alongside Oscar Isaac, left, and Carey Mulligan.
Timberlake joins Charlie Wilson, Pharrell Williams, and Snoop Lion onstage during the 2013 BET Awards at Nokia Theatre L.A. Live in Los Angeles on June 30, 2013.
Timberlake promotes "inside Llewyn Davis" along with actor Garrett Hedlund, left, actress Carey Mulligan and actor Oscar Isaac, right, at the 66th Cannes Film Festival on May 19, 2013.
Timberlake and his wife, actress Jessica Biel, arrive at the Time 100 gala celebrating the magazine's naming of the 100 most influential people in the world for the past year, in New York on April 23, 2013.
First lady Michelle Obama speaks as musicians Mavis Staples, left, and Timberlake listen during an interactive student workshop at the State Dining Room of the White House in Washington, D.C., on April 9, 2013. The first lady hosted middle and high school students from across the country to take part in the workshop on "Soulsville, USA: The History of Memphis Soul."
Timberlake, center, performs during a skit on "Late Night With Jimmy Fallon" along with A.D. Miles, Tom Shillue, Fallon and Chris Tartar on March 12, 2013. Timberlake is a recurring guest on the late night show.
A tofu Timberlake performs, alongside Bobby Moynihan, during a "Saturday Night Live" skit on March 9, 2013.
Timberlake and Jay-Z perform during the 55th Annual Grammy Awards at Staples Center in Los Angeles on Feb. 10, 2013.
Timberlake accepts the award for Entertainer of the Year onstage during Spike TV's 6th Annual "Guys Choice Awards" at Sony Pictures Studios in 2012.
Justin Timberlake announces Myspace TV, a social TV service that will be available on Panasonic connected televisions, at the 2012 International Consumer Electronics Show in Las Vegas. Timberlake is the company's co-owner.
Timberlake took on an action hero role in 2011's "In Time."
Timberlake and Jimmy Fallon perform "The History of Rap," a lively medley of rap song excerpts, on "Late Night with Jimmy Fallon." The two performed part one in 2010 and part two in 2011.
Timberlake and Mila Kunis star in 2011's "Friends with Benefits" as a couple who think they can keep their relationship strictly physical.
In 2011's "Bad Teacher," Timberlake gets geeky (if not freaky) with star Cameron Diaz; here, he takes a stroll down the red carpet at the film's New York premiere.
Gentlemen who wear glasses (like Timberlake) get passes from girls without glasses (Cameron Diaz, left) in 2011's "Bad Teacher."
Timberlake more than made up for any worry he may have given mom Lynn Harless growing up by taking her to the 83rd annual Academy Awards in 2011.
Timberlake provided the voice of Boo Boo for 2010's "Yogi Bear" and dropped in on the premiere at Mann Village Theater in Westwood, Calif.
Timberlake proved himself a fashion designer as well as singer and actor by launching the William Rast clothing line with old pal Juan "Trace" Ayala, right, in 2005. Here, they take the runway for some welcome applause at 2010's Fashion Week in New York.
Timberlake wasn't just in New York for his own collection; he also took a seat with Jessica Biel at the Paris68 Fall 2010 Fashion Show.
In 2010's "The Social Network," Timberlake played Napster founder Sean Parker as a poisonous mentor to Jesse Eisenberg's Mark Zuckerberg, founder of Facebook.
Timberlake worked opposite Mike Myers on "The Love Guru" in 2008.
Timberlake played one of Beyonce's "Single Ladies" backup dancers when she appeared on "Saturday Night Live" in 2008 to spoof her famous video.
No matter what other ventures he is involved in, Timberlake is first and foremost a musician: Here, he performs in Abu Dhabi during the final show for his FutureSex/LoveShow World Tour in 2007.
Timberlake played cuckolded boyfriend Ronnie in 2007's "Black Snake Moan."
Timberlake and Andy Samberg starred in the Emmy-winning "Saturday Night Live" short "(Bleep) in a Box" in 2006.
With a 6 handicap, Timberlake is also a crack golfer; here, he takes a swing at the Bob Hope Chrysler Classic in Palm Desert, Calif., in 2006.
Back in 2006, the future "Bad Teacher" co-stars Timberlake and Cameron Diaz were still an item, and even showed up on "Saturday Night Live" together. Here, they catch some basketball as the Los Angeles Lakers take on the L.A. Clippers.
In 2006's "Alpha Dog," Timberlake played a gang member who gets in way over his head.
Janet Jackson and Timberlake right secretly planned for him to grab at her costume while performing at Super Bowl XXXVIII in 2004, but got more (and less) than they bargained for, when the wardrobe "malfunctioned" and Jackson was briefly exposed to 140 million viewers.
Following the "wardrobe malfunction" with Janet Jackson at the 2004 SuperBowl, Timberlake was told he'd be barred from the 46th annual Grammys if he didn't apologize. As he accepted the first of two honors he would win that night, Timberlake offered up a scripted "sorry" speech.
Tattooed and confident, with a super-short haircut, Timberlake wowed on his "Justfied/Stripped" tour with Christina Aguilera in 2003.
Prior to going solo and turning to acting, Timberlake had fans screaming whenever he performed with boy band N'Sync; here in 2001 he shakes hands before the Billboard Music Awards in Las Vegas.
Long before he went into the fashion business, Timberlake made some daring forays into clothing ... including this questionable matching ensemble with then-girlfriend Britney Spears. The two wore the clothing to the 2001 American Music Awards, where she co-hosted.
N'Sync was one of the 1990s' top-selling boy bands; their first album sold 11 million units, thanks in part to the charisma of co-lead singer Timberlake, who shared the stage with J.C. Chasez. Here, he gets the audience jumping on their 2000 world tour.
Timberlake attended the Wango Tango Concert in 2000 in Los Angeles while still a member of N'Sync..
Four years after forming, N'Sync (from left to right, Lance Bass, Timberlake, Joey Fatone, J.C. Chasez and Chris Kirkpatrick) could stand tall at 1999's WB Radio Music Awards in Las Vegas.
Who's the leader of one of the greatest clubs in the world? Hard to tell, but "Mickey Mouse Club's" classes of 1989-94 spawned some of the biggest future names in music and acting, including Britney Spears (blue vest), Christina Aguilera (next to Britney), Keri Russell (front of Christina), J.C. Chasez (left front), Timberlake (behind J.C.) and Ryan Gosling (second from top right).