It was only the first class session but I'm glad that I signed up.
Colin is teaching a class on High Dynamic Range and I'm hooked.
So far only a couple of hours spent in the computer "darkroom" but time well spent.
I have much work to do before the next session.
If you haven't investigated the offerings at HCP, you should. Rachael is doing a fine job of building an educational program that will help a lot of photographers do better work.
You can see some of Colin's work and buy one of his books at the Blurb.com site.