I have put my money where my mouth is and have thrown my hat in the ring (wow 2 cliches in the first sentence already :) to present at Ignite Raleigh.
I'm a fan of the Pecha Kucha style that Ignite Raleigh promotes of 5 minutes/20 slides. I've worked with a few classes to use this style for their final project presentation and it has worked great - if you combine it with Presentation Zen. So that is my presentation topic