A gem of a liquor store - excellent booze selection. Helpful staff. One employee turned me on to a $16 single malt scotch. Daily wine tastings with cheese 5-8 p.m.. Right next to the Clark Street stop on the 2/3 subway line. Delivery is free, and even includes Manhattan!
World-class boxing gym, open to all. All of the greats have trained here, but newcomers shouldn't be intimidated. It's regularly packed with amateurs and pros, men and women, kids learning the sport, and an unusually diverse mix of white and blue collar dudes. Trainers charge $20/hour, but many will train you for much longer than that, without charging more, which is quite a bit cheaper than personal trainers at the chain gyms around the city.
Stunningly good Arabic bakery/pastry shop on Steinway Street in Astoria. Excellent Baklava, Bird's Nests, mamoul (Special dough, filled with pistachio, rosewater, baked to a golden brown, sprinkled with powdered sugar), honey cake, and ghraibe. Very close to some of the few establishments in NY where you still smoke (as long as it's sheesha from a hooka water pipe). Definitely one of the best bakeries in town.
Not necessarily the place to go for comprehensive selection, this tiny record store does offer nuggets in the form of quirky soundtracks, 1970s prog rock, psychedelia, classic rock, and plenty o'punk. Also a good source of box sets and promos. Fits right into the avant garde businesses of Carmine Street.
A large and friendly bike shop in the heart of Park Slope, Dixon's offers both sales and service. Conveniently close to the Food Co-Op, Dixon's operates with a refreshingly hospitable attitude. Novices and pros alike can feel at home there, and they handle all repair-related questions patiently, no matter how stupid (Do I need a special tool to change the tire?).
This is the place for organic produce, bulk grains and cereals, natural health products, and every soy-based product that can be dreamt up. There is an large selection of different granolas - especially good are the French Vanilla and Hemp varieties, the latter of which won't necessarily get you stoned, but will get you your FDA recommended daily allowance of Omega 3's.
Normally choosing a bank is largely based on deciding which one will screw you the least, but Commerce Bank seems to defy that bit of conventional wisdom. An alternative to the corporate behemoths, Commerce has kind of a friendly local vibe going on, and is open 7 days a week. You gotta give them credit - in the trade-off between folksy customer service and proper security measures, they opt for the former; the lack of bulletproof teller windows earns them the dubious honor of being robbed more than any other bank in New York. The Penny Arcade is pretty fun too (there's a little one for the kids' piggy banks).
A student traveler's first stop should be this travel agency, which consistently offers great deals to far-flung locales like Amsterdam, Tel Aviv, and Buenos Aires. Also useful for planning and purchasing Eurail passes. Their website can be unwieldy - you're better off going in person to work with one of their young and spry agents.
For Mac junkies, it's hard not to have fun in this store, where all of the equipment is hands-on. Upstairs is the location of the humbly named 'Genius Bar', where Apple gurus will try and solve your sundry hardware problems. Great place to check out if you want to test drive before buying.
One of the venerable Chinatown buslines, Fung-Wah offers online purchasing, and sometimes a Chinese movie, as they zip back and forth to Boston, Washington DC, and Philly a seemingly impossible number of times a day. A conveniently (if sometimes less than comfortable) way to travel to and from the major industrial cities of the Northeast, you won't find a cheaper bargain.