Camino Real Playhouse in San Juan Capistrano stages live plays year-round. Not all plays are appropriate for all ages, so check their website before making plans.
They are famous for their annual melodrama, where the audience cheers the hero and boos the villian. They even provide foam "rocks" for throwing at the villian when he is particularly evil!
A Christmas Carol is running November 28 - December 21, 2008! You can buy tickets online at their website.