Joey Does JT

5/14/2007 3:17 PM PDT
TMZ caught up with "Dancing With the Stars" hopeful Joey Fatone in Las Vegas over the weekend -- as he relived his *NSYNC days by singing karaoke-style to a Justin Timberlake jam! Gotta dance and sing!

Fatone started his evening by having dinner at Stack in the Mirage with wingman Aflonso "Carlton" Ribeiro. When they shifted to JET nightclub, Joey grabbed the mic started and "performing" Timberlake's hit "Sexy Back."

In mid-song, the crowd chanted for Ribeiro to add his famous "Carlton Dance" to the routine -- and he graciously obliged!