I can not vouche for this since I haven't been yet, but I found this clipping in Village Voice for Manhattan Bistro. Since by scanner is being funky (grrr) I'll just type out the DEAL STEAL (this is my new tag for things that aren't 100% free, but still rock):

Manhattan Bistro
HAPPY HOUR EVERY NIGHT
M-F: 5 - 10 PM
S-S: 7 - 10 PM
Half Price Drinks
Selection of FREE APPETIZERS
129 Spring Street
212.966.3459

Half price drinks with free nibbles, till 10? Um, why not?

Yelp reviews: http://www.yelp.com/biz/manhattan-bistro-new-york