A short while ago I delivered an entry-level talk about RSS and Atom feeds in the University of Bath. It was a very simple talk - what a feed is, why you should care, how to spot them and what to do with them once you've found them. Despite a 6 week gap between writing it and performing it (damn that illness) it went down very well, with much praise and thanks being heaped on me.
This talk was the second in a series of talks given by my team and was the first to be filmed in front of a live studio audience. The film can be found here. It's not the most polished piece of presenting I've ever done, but it was good fun.