This was my first London Java Community event. I've heard of cloud computing and was looking for a bit more. The evening started off with a lightning talk about the Lift web framework. This was really very interesting, but after so long with the Java of GWT I look at web frameworks that involve HTML and big round trips to the server to display pages and page updates with quite a lot of caution.
Nikita Ivanov seemed to have a lot of very interesting things to say. I just couldn't understand 90% of what he said. I don't know if this was caused by where I was sitting of the PA. Anyway, he demonstrated very well how simply distributed programs could be written in Scala. The most impressive thing he demonstrated was the lack of a deployment stage and how the runtime adjusted effortlessly to the realtime addition and removal of processing nodes.
Unfortunately not the best presented presentation, but enough to impress me and for me to buy a Scala book.