What I really appreciate about Siggraph is that you see talented people speeking about they area so that you can reach the way of some people think.
Google organizes and publishes on YouTube some Google Tech Talks. I really like some talks like The Clean Code Talk Series by Misko Hevery. He also has a really great content on his website about Writing Testable Code
Have a look at these videos (linked below) and think about how he thinks, his vision of programming ... it's really instructive!