At San Diego Comic-Con, there are cool things happening outside of the convention halls and floor. You can even pick up a lot of free swag. Teams of people are in the streets just handing out stuff. DC Comics has an Art Exhibit called Darkness and Light at 363 5th Avenue, San Diego, CA 92101. It is part of their We Can Be Heroes charity campaign. The art pieces are in a bunch of different media, created by very talented artist. I didn't make note of who the pices are by, but you can find more info about it at their website.