Justin Bieber's Tourmate Tells All

What did you expect -- chess matches and intense political debates? Singer Jeremy Greene says life on the road as an opening act for Justin Bieber is a big old party, complete with Segways, water guns and practical jokes. But he's also blown away with the 16-year-old pop sensation's sheer talent.US: So what's it like backstage before the show? Like how long do rehearsals usually take for you and