There's nothing sadder than watching the Old Kids on the Block flirt with models 15 years their junior in the video for "Summertime." I know I'm getting older, and I don't need to be reminded of it by seeing a nearly 40-year-old Jonathan Knight partying in a beach hut. Which is why I breathed a sigh of relief at the news of a new Menudo single. This boy band is actually made up of teenagers. How novel. A fresh crop of lads sing "Lost," a boy band anthem so catchy it would undoubtedly prompt Menudo alumnus Ricky Martin to shake his bon bon. -