I have a couple of friends and acquaintances who own breweries and brewpubs, and a couple of friends and I brew our own, so I'm typically drinking very local stuff that doesn't make it out of the market. It's cheap, it's fresh,
it's often some of the best beer you can find, I'm supporting local businesses, and it's sometimes even made from local crops. Honestly, if you want to make beer a qualitative consumption experience rather than a quantitative consumption experience, drink local.
Beers that I drink from brewers I don't know: anything from
Ommegang,
Allagash,
21st Amendment,
BrewDog,
Hacker-Pschorr,
Clipper City,
Sly Fox,
Stone, in no particular order (though I really do love Ommegang and Allagash).
People love their hometown sports teams and hometown junk food, but for some reason they completely skip over their hometown beer. What could be more perfect for a Philadelphian than sitting at a Phillies game, eating a cheese steak and drinking a Sly Fox IPA?
To all the people who said they like Guinness and do not live in Ireland: you almost certainly have a brewery or brewpub near you that makes a better stout. You almost certainly have 5 more than make a worse one, but come on, it's only one drink, try to live a little and see what's out there.
Myopic Rhino: if you've only just started drinking beer, Arrogant Bastard--like all really hoppy beers--is an acquired taste. It took drinking a Californian-style IPA (more citrusy hops as opposed to the earthier, spicier English hops) from a hand-pumped cask (luxuriously smooth, no carbon dioxide to make it astringent, not shockingly cold to freeze the taste buds) to teach me how to taste and appreciate hops. I now drink everything else and like it (hell, I can now tell what a brewer did *wrong* based on the taste of the beer), but there was definitely a period of time where I didn't "get" really hoppy stuff.