OMG. This has to be the best video of the week...maybe the month..maybe even THE YEAR! The Backstreet Boys are currently doing their Las Vegas residency at Planet Hollywood and have been having a ton of fun performing for their fans and even some celebrities who have come to see the show! This week, a very special guest was in the audience. It was Joey Fatone from NSYNC! Contrary to popular belief, that they two bands hate each other, clearly they have gotten over that. While they were singing "Shape Of My Heart" A.J. pulled Joey up on stage and they all sang to him. SO AMAZING! Watch the video below!
PHOTO: GETTY IMAGES