I hardly ever drink beer. Partially because my digestive system just doesn't handle it well any more. I've always had stomach problems to some extent, but they've gotten much worse over the past few years.
However, when I do drink, I love a Molson or a Moosehead. Canada only really does two things well, beer and hockey, but they excel at each. Labatt was kind of my gateway into the canadian stuff and it'll do as well. If nothing canadian is available, Bud Light is fine, and every now and then I get nostalgic and crave a Miller High Life.