I went to see Blue Dragon at the Royal Alex last week. The staging is fabulous, the writing is pretty weak, but you almost forgive Lepage because 1) he had a co-writer and 2) the staging is so good.
Adviso: do not sit to the far left of right in the lower balcony. The stage is very obscured, but the ticket price is still $86! Make sure you speak to someone live, and ask about the view. The staging was important in this play, and we couldn't see lots of it.