As part of the Mozilla Evangelism Reps program, I am right now preparing a training on how to learn from other talks. As a demo I went through a few talks showing what makes them interesting and pointing out good tricks the speaker (in most cases subconsciously) used and how you could use that for your own talks.
One of the first talks is Pablo Defendini with “Adaptive Web Design” explaining how he created a responsive online comic and why.
You can find the minute-by-minute analysis of the talk on the Mozilla Wiki.
I really enjoyed this talk as it shows that enthusiasm about a subject matter and just “having a go” can work out really well. It also shows that everything can go wrong when you present and that it isn’t the end of the world – you just need to move on swiftly.