This is the new bike share program of NYC. It's amazing. I went for the 1 year membership for $95. You can also get day passed for around $10. There are stations all over the city. You can now have a wonderful day changing between walking, biking and the subway. Finally, I can stay away from the crazy cab drivers...
Coney Island is the best for everything - the beach, the rides, the beer - but mostly for the Skee Ball. It's incredibly addicting, affordable and satisfying (depending on your aim).
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.