Singer/actress Mandy Moore interrupted a concert to proclaim her disgust for the opposite sex - insisting "guys suck". The 23-year-old, who has dated actors Zach Braff and Wilmer Valderrama in the past, was playing a concert in Manhattan recently when she made the comments. She said, "You know, guys suck. I don't want to make a sweeping generalization, but some guys suck! And I've come across a few."