Carlow Brewing Company, which makes the O'Hara's line of brews, is the only one I've heard of, and that's only because you can sometimes find it in the States (http://www.carlowbrewing.com/). There stuff is solid, but nothing crazy. If you're looking for crazy and you're going to be in the UK and you've got a few days to kill, you owe it to yourself to visit BrewDog in Scotland:

http://www.brewdog.com/

I get out to Portland about once a year, and I always make sure to grab one or two Terminal Gravity IPAs. Don't know what it is, but that beer just kind of sticks to me...

Here here! Rabbid Rabbit is one of the best American saisons I've had. This beer tastes like fresh cut hay--I'm not exaggerating. Beautifully flavorful take on the style. Hennepin from Brewery Ommegang is another gorgeous saison. Just an awesome style all around. Worth keeping in the beer fridge for every occasion.

Tried it. With an open mind. Awful. A-B trying to be craft. No soul, no flavor, no truth. Deception from big beer. If you like it, drink it. Otherwise, avoid or, if too late, dump.

Congrats, you scored big. Enjoy 'em!

Pretty sure you can't get these in NY, but if you ever make it to the Midwest, Three Floyds Dreadnaught Imperial IPA is outstanding. Also, seek out Founders Brewing's Centennial IPA, which has nothing sweet about it: it's full-bore bitterness from big-time Centennial hops. Then there's Surly Brewing's Furious, an all-out hop monster that makes the hop-timid run screaming in fear...

Toss up: Founders Centennial IPA and Dark Horse Crooked Tree.