Since InBev bought AB, and has been slowly gutting my hometown brewer I've refused to drink any of their products. I go for local brews when I'm on overnights.
I like anything that's really hoppy. A good IPA or APA usually fits the bill. I do have some particular favorites though:
Yuengling, Schlafly (St. Louis Craft Brewer) and New Belgium (Fat Tire) are among my favorites.