Even though he's mostly almost sort of famous for at one point being married to Jessica Simpson, apparently Nick Lachey is an expert on how to be in a successful boy band.
Because, you know, he was in that one that wasn't N'SYNC or the Backstreet Boys or New Kids on the Block or O-Town or Dreamstreet. And now they're reuniting to compete against the likes of One Direction and the Wanted.
Oh, and speaking of One Direction, Lachey has a bit of advice on how they can stay relevant. (Is this one of those "do as I say, not as I do" things?)