Lower East Side
Mezetto offers a week-long bottomless brunch deal that runs from 10am-4pm. You’re allotted a 1.5hr block to tipple as many Champagne-and-fruit-juice cocktails as possible (options include the classic mimosa, as well as bellinis). Also, just for the record (someone’s keeping a record, right?), this joint offers a bottomless sangria with dinner Sunday through Thursday, should you have the inclination to return.
Upper East Side
This UES sports bar special actually lasts from 11:30am-7pm (every day except Sunday when they start at 12pm), grab a bunch of beers for $2.50 and move on, or hang here for most of the day. Either way: success.
From 12-3pm, this low-atmosphere dive offers a "buy two, get one free" deal, which makes its cocktail offerings just like the used video games at GameSpot, only, you know, WITH MORE BOOZE.
From 2-6pm, Monday-Friday, rail drinks and beer are offered two-for-one, which means you you can snag a set of drafts for $5.50 and a duplet of whiskey sodas for $7: a cruel, evil, brilliant, savant, idiot, genius idea if ever there was.