I just learned that Julie Taymor, the director behind such visual masterpieces as Titus, Frida, and Across the Universe, has been working on a movie of The Tempest, which is currently scheduled for release this year, and which features Helen Mirren as a female Prospero and Djimon Hounsou as Caliban. The cast also includes a bunch of guys who don't give bad performances: Alan Cumming, Alfred Molina, Chris Cooper, and David Strathairn.
Taymor previously directed a production of The Tempest for stage, and the clips I have seen of it are remarkable. If I could go back in time, I would buy tickets to see it. Since that's unlikely, I'll be at the new movie version on opening night.