Photo of Dunkin' Donuts in Sheepshead Bay via Lisanne!'s Flickr. The city may be divided on where the first coffee of the day comes from: Starbucks? Dunkin' Donuts? Local caffeine purveyor? Everyone can agree that a free coffee is welcome, though -- especially with prices per cup running about the same as per gallon gas. Tomorrow Dunkin' Donuts is offering free 16-ounce iced coffees from 10:00 a.m. to 10:00 p.m. at participating locations for......