For more info, basically Comic-Con is the Convention of all Conventions, held at the end of July in San Diego. I travelled across from the UK to visit 08 convention.
Met Steve after his career talk that he held, also bought some original sketches from him. Also met a whole host of other crazy and famous people. Ended up in a free showing of the latest Futurama movie showing, out of pure chance and met the cast and creators.
Also stopped by the Telltale Booth quite a few times.
Basically Comic Con is a must if you can get to it!