Based on numerous recommendations from GWCers I've torn into Alan Moore's Watchmen. Even though I'm only two chapters/issues in, it's amazing how much popular sci-fi/comic culture draws from this story and the way it's presented. It's gritty, ugly, and often uncomfortable to read, but I can already tell that it's going to give me new insight into the other material I consume.
I also recently jumped into both early and late Star Wars tales in the form of the 125-years-post-Episode-IV Legacy series and the thousands-of-years-earlier Knights of the Old Republic. Incredibly, I've never been exposed to the "greater" Star Wars universe, except through a two-year ongoing explanation from Sean. It's great to see the story in vivid art now, too.
Thanks again for the recommendations, everyone. And I totally look forward to discussing these with you soon!