Gamasutra has a section dedicated to live GDC coverage that you can check out, and GameSpot has some more game centered highlights.
I caught the first show of 300 this morning before work. The preview had looked intriguing although I'd never seen Sin City, I was going to take a chance. The 'entire' movie wasn't as stylised as I thought it would be, it had a certain visual look, but it was not overdone. It's definitely a 'guy flick', as there was not a female in the audience for the first show. Very, very, violent movie (has to be a record for the most decapitations in a movie) but it's about warriors so what did I expect? I enjoyed it more than I thought I would.