Gonzalez y Gonzalez, New York City
If you want to try your hand as salsa dancing, stop by at G y G on a Friday night. There's no cover, and plenty of willing partners. It's casual enough that those who aren't yet confident can dance, but you'll see some experts as well! Live band!
Good food and drinks as well. Go early if you want room.
Dress Code: Dress to be seen, but also to move.