I gave a talk at last night's Christchurch Python meetup about Python's relatively new asynchronous programming features. To be honest, I didn't know all that much about the topic and signed myself up for the talk to force myself to learn :)
I used Jupyter Notebook for the presentation. Its ability to mix together text and interactive Python snippets works really well for this kind of talk. I've published the slides on Github as it has native support for rendering Jupyter notebooks (thanks Github!).