I went to see The Tempest in the Globe theatre in the summer of 2013. And while it was some time ago, it really helped me to understand the play.
The tempest, Shakespeare's final play and considered to be one of his least understandable is not an easy read but an interesting read it is. Filled with many, many characters and as much different story lines it's absolutely necessary to pay attention at all times.
I enjoyed reading it, there were some very nice passages of course and it is great to get the references in other books to this play, but my reading experiences was really colored by the fact I'd already seen the play and could thus imagine it happening.