I can only hope this was successful enough that “one night only” turns into “three months at the Pantages.” Tell me: Would you go see a musical of The O.C., and which are the moments from the series’ entire run that you would DEMAND be a part of it? Which parts would you blot out (I would lose the entire existence of Olivia Wilde, for example)? And could you accept Sandy Cohen played by anyone other than the Master of the Brows himself, even if it meant he was a decade-plus too old for the part? And why isn’t Mischa Barton playing Marissa? WHAT ELSE IS SHE EVEN DOING. Discuss.