I've just taken my teen ds to see The Curious Incident of the Dog in the Night-Time at the Apollo Theatre, London and it is absolutely brilliant!
We booked tickets a while ago and got front row of the balcony for £12, I did wonder what we would see from up there but actually it was brilliant, it seems to be produced in a way where is it designed to be looked down on.
There is a fair bit of swearing in it but for adults and older dc it is one really worth watching.
OddBoots- I am on verge of booking front row balcony seats for my DH and DC in January. It is warning that you have to lean forward and the leg room is restricted- was this a problem? Also, is it unsuitable for a 11 year old?