The more you watch the higher the expectations get and that makes those moments come around more rarely.
I also had this magic moments with this. Certainly one of the best productions I've seen - especially as I didn't expect it. There was not much of the Donmar's A Doll's House I really liked. And I was not too keen on watching this play again.
It's not only the wonderful performances it's also a very likeable adaption of the script.
And what added much to the great experience was the highly gripped fellow audience members- mainly some school-classes - they we're all extremely enthusiastic about it.