The place: Radegast Hall. Take the L train, get off at Bedford Ave (first stop in Brooklyn).
http://www.radegasthall.com/
http://maps.google.com/maps?f=q&hl=en&geocode=&q=radegast+hall,+nyc&ie=UTF8&ll=40.717729,-73.959231&spn=0.008603,0.018797&z=16&iwloc=0x89c2595c2cac7f81:0x8d7987001867c2a3
You can easily identify me: I'm a generic looking white guy, and I'll be drinking beer.