EXCLUSIVE: With his HBO comedy series Entourage recently wrapping production on its final season, Doug Ellin is shifting attention to his next project for the pay cable network, half-hour pilot 40. Michael Rapaport has been tapped to star opposite Ed Burns in the ensemble comedy, which revolves around four lifelong friends who help each other navigate life at 40, which isn’t all they expected it to be. Burns plays one of them, a married guy and a father who used to work at Bear Stearns making over $2 million a year but has now been out of work for almost a year. Rapaport, repped by Paradigm and Brillstein Entertainment, will play another friend, also married, who is described as a neurotic everyman. Rapaport’s series credits include comedies The War at Home and My Name Is Earl and drama Prison Break.