The best underground shows you will find will have free pbr and models as far as the eye can see. They are rarely announced, so keep your eyes out for promising openings, especially with Milk Underground coming up.
Hands down the best wood fire pizza I've had in Brooklyn. Great for a date or if you're feeling fancy schmancy. (Also, don't sleep on the caesar salad here.)
Having the experience of owning and running a coral reef aquarium (and frequenting this particular shop about once a week) - I was sad to hear it closed it's doors. Their reef display tank was always amazing. These pictures were taken from PetCo at Union Square (I also used to go there for my saltwater needs).
The best freshly pulled noodles. My favorite is braised pork with noodles in broth, celery and cilantro add a delicious freshness. Perfect for a cold day.