Josh Groban

The ninth and potentially penultimate season of 'It's Always Sunny in Philadelphia' won't arrive on FXX (yes, a spin-off) until some time in September, but we've already heard quite a bit about the gang's upcoming adventures. We hope Dee has a handle on her heart condition, because her dreamy favorite singer Josh Groban will be guesting in an upcoming episode!

Oh that Josh Groban.  Always willing to poke a bit of fun at himself, always leaving us with a song in our hearts.  After his most recent turn helping Jimmy Kimmel eulogize himself in memoriam at the 2012 Emmys, and rather than return to his occasional 'Glee' guest spot, the piano crooner is setting his sights on a return to the final season of NBC's 'The Office!'  Reprising his role as Andy Berna