Awesome.. definately one of my favorite Angels there... soooo peaceful.
On a not so good note... those purple nudibranchs will not live in an aquarium. I made that mistake myself.. bought one, got home, read up on them and realized there is no food you can give them in an aquarium (they rely almost solely on orange sponges for food) so they starve to death and release toxins into your tank. I hate being the bearer of bad news, but unfortunately I have never heard of a single success story with those purple ones. They do look quite amazing though I admit.
GregAW, very nice tank, fish and corals. this is and will be definitely be one of the tanks that will inspire and direct a newbie like myself...great job...