Stone Librande's Game Design Lecture
Stone Librande, the Lead Designer on Spore, will be talking about game design on April 16th at Gamepipe. Having had the privilege of working with him, I'd highly recommend his lectures.
Information can be found here: http://gamepipe.usc.edu/USC_GamePipe_Laboratory/Seminars/Entries/2009/4/16_Designing_Playfully.html
His personal website is here: http://www.stonetronix.com/ and has some awesome discussions on game design
Via Kotaku