Pecha Kucha is a talk format with pretty intense restrictions: each speaker must design exactly 20 sides, and each slide is shown for exactly 20 seconds. The presenter has no control over the timing of the slides; practice is key. A couple weeks go I spoke at PK Winnipeg, and the good folks behind Indie Game: The Movie recorded it. 
Alec Holowka Talks at Pecha Kucha from IndieGame: The Movie on Vimeo.
