My two favorites are Firestone Double Barrel Ale (!!) and Newcastle. The only beer I've ever had that I intensely disliked was Sierra Nevada Pale Ale, though I know many love it. I'm also not a fan of Guinness because it tastes almost "flat" to me, though I like the flavor.
Can you wonderful ladies and gentlemen make a few recommendations on what I should pick up to try? I know this is an awfully vague post, but I'm trying to expand my beer horizons. Thanks!!