Dr Doerner is an incredibly nice and approachable man, and his lectures are well notated and well explained.
He is much more vague when it comes to administrative details than is desired. He also needs to check his emails more often!
Great lectures, and he's really easy to get a meeting with when you need one. He's really helpful when it comes to talking about your progress.
Sometimes he takes ages to answer emails, does he not have a phone?