I may be a little biased, but I think the best beer in the world is my hometown brew, Straub in Saint Marys, PA. If it isn't the best beer, it may be the best beer you never heard of. I would answer the question with a Hub, but I already did that.
Leinies have a limited distribution, not being available even in all states of the U.S., but they might possibly be available internationally. Here's the Leinie Lodge info: phone number 1-888-534-6437 (LEINIES), email: email@example.com