I've produced a very cut down version of the presentation I've been giving at a lot of conferences, giving a high level overview to the Disruptor. This serves as a quick intro to the concepts behind it.
My slides are usually pretty useless without me (or someone else) talking over them, so for more context don't forget there's always my original blog posts (the Magic Ring Buffer, Reading from it, Writing to it, Wiring it up), which are now pretty dated, and the Java Magazine article I wrote at the start of the year.