The 39 steps
I took the wife to see a stage production of the 39 steps at the Olympia theatre in Dublin last night (I didn't think it would be possible to stage this) and we enjoyed every minute of it, only four actors but they carried it off beautifully. As one critic put it 'The key question in the 39 steps isn't whodunit, it's how they dunit'. I would recommend it highly if it comes your way, great laughs.