Sean Hayes follows Will And Grace co-star to make London theatre debut

Sean Hayes will star in Good Night, Oscar at the Barbican Theatre (Isabel Infantes/PA) Sean Hayes is following in the footsteps of Will And Grace co-star Eric McCormack by making his debut as an actor on the London stage. The American star, known for playing McCormack’s outlandish friend Jack McFarland in the sitcom, will reprise his Tony Award-winning performance as a Hollywood actor and concert pianist in Good Night, Oscar at the Barbican Theatre..