From Ignite RailsConf in Baltimore.
Ignite events are lightning talks, where 16 speakers each get 5 minutes to talk about a subject they are passionate about, but with a twist: the speaker's slides are automatically advanced every 15 seconds. Ignite's motto is "enlighten us, but be quick about it!"
Here's Joshua Baer's talk, "Five Secrets to a Killer Elevator Pitch"
http://www.youtube.com/watch?v=jEd0fjXsk8w