Filming is already underway in Hawaii on writer/director Cameron Crowe’s untitled next film, but the filmmaker is adding two fantastic last-minute additions to the cast.  The Wrap reports that Bill Murray is in talks to join the pic, while THR reports that Jay Baruchel has signed on to reunite with his Almost Famous helmer.  Bradley Cooper stars in the romantic comedy as a defense contractor overseeing a weapons satellite launch from Hawaii who teams up with (and falls for) an Air Force pilot (Emma Stone) to scuttle the launch.  Mystical island forces also play a role in the story.

Murray’s character is being kept under wraps, but Baruchel will be playing the step brother of Cooper’s character.  Baruchel makes a great addition to the ensemble, and the thought of Murray and Crowe teaming up on a feature is incredibly promising.  The swell cast also includes Rachel McAdams, Alec Baldwin, and Danny McBride.  Murray will next be seen in George Clooney’s WWII pic The Monuments Men, which opens this December.