I wasn't a beer enthusiast while living in NYC, but still I don't recall hearing much about local breweries. Are there any worthwhile (well-known, or tasty :-) beers brewed in NYC, worth visiting at their sources?
I'd like to hear from those who have actually toured breweries in NYC and have some subjective input, since anyone could easily Google "breweries in NYC" and provide an impersonal list. Perhaps a local citizen could take into consideration breweries which are easily accessible via the subway system (since who takes buses in NYC unless in Queens, right?—and I doubt there are any breweries in Queens). Even better, breweries that are in fun neighborhoods to hang out, not some desolate industrial park in Brooklyn (unless that's part of the appeal) or a shady neighborhood in the Bronx. I mean, it better be some damn good beer if anyone's gonna be bothered to take the subway all the way to the Bronx :-)
Also see Asking brand-specific / regional questions "responsibly" to discuss the validity of this question.