Spotted: Justin Timberlake Plays Through

Every day a multitude of stars wanders through the halls of MTV News to talk about their latest projects and goof around with our intrepid correspondents. But sometimes we catch stars elsewhere, and that's why we put together Spotted!, a daily compendium of stars in the wild.

Justin Timberlake is no stranger to the golf world — after all, the dude recently opened his own course outside of Memphis (where he grew up). He broke out the irons and woods over the weekend for the Shriners Hospital for Children Open, a charity golf tournament he hosts at TPC Summerlin in Las Vegas. The festivities kicked off with a youth clinic yesterday and will continue all this week, culminating in a special fundraising concert at Vegas' Mandalay Bay Events Center, which will feature Timberlake, Ciara, Alicia Keys, Taylor Swift and TLC. It's an impressive series of events for the tireless Timberlake, who will also appear on "The Jay Leno Show" tonight.

Timberlake isn't the only star who spent some time in Sin City over the weekend, as Mariah Carey also performed a special show at the Pearl at the Palms Casino. The concert was in support of her recently-released Memoirs of an Imperfect Angel, which has already spawned two hits in "Obsessed" (plus it's Gucci Mane-assisted remix) and "I Want to Know What Love Is." Click here for these photos plus the entire "Spotted!" archive, which features over 300 candid pictures of Britney Spears, Madonna, Shakira, Lady Gaga, the Jonas Brothers, Kanye West, Katy Perry and the casts of "Gossip Girl" and "New Moon"!