Just want to throw this out there since I'm good friends with the owner.
Spanglish is basically like speed dating but for language exchanges, you speak for 5 minutes in english and 5 in spanish with a native spanish speaker and then change tables. I've been attending for almost 2 years here in Buenos Aires and its taken me from absolute shit status to resonable fluency all the while introducing me to some of my best friends.
http://www.facebook.com/SpanglishNYC for more info.
Plus, the venue looks sick as fuck. Way better than the ones here in BA