James, there's been a lot of developments inthe past year, especially up in Berlin and Hamburg, but I haven't been keeping up. But I would rate the likes of
Hopfenstopfer
Kehrwieder
BrauKunstKeller
Ale-Mania (previously known as FritzAle, till Fritz Cola took action)
Riegele
Camba Bavaria (who have a ridiculously large range)
Freigeist (though some brewers I know think he just brews crazy stuff to get the US market)
Ones I've heard good things about, but have not tried any beers from yet, include:
Schoppe Bräu (no idea why I haven't tried any of their stuff yet. I've had plenty of opportunity!)
BrewBaker
Heidenpeters
Buddelship Hamburg
There's also a few "crafty" brands, like Braufactum, which produce some really fantastic beers, but also crazily expensive, aiming at the "gourmet" market. Also, they don't count as "craft" to me, as they are part of the behemoth Dr. Oetker group, via Radeberger.
Bitburger set up a craft brand usingit's pilot brewery, calling Craft Werk, and produce some surprisingly decent beers, and at least they don't hide it is Bitburger. However, I don't see them around, so suspect it was a bit of marketing.
Even my local, regional brewery is producing IPAs, Stouts and Porters the past two years. It's going craft mad over here! <!-- s:) --><img src="{SMILIES_PATH}/icon_smile.gif" alt="

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John, I think I only tried one of the Maisel & Friends beers at BKL. Can't remember it making a good impression.