Krispy Kreme, the offical donut of government contractors the world over.
They are evil, I once DHL'd two dozen to a friend in South Africa so she could see what the big deal was, now that Krispy Kreme are in London, whenever she's there for business, she can't leave the country without stopping in for a dozen original recipe donuts.
But getting back to the task at hand, go in your local store, look interested, get the free sample, and order two dozen and take them to work, after eating about 3-5 of them a day for a few days running you should slowly get tired of them enough to stop eating them.
The urge will be there for a quick fix, I live close to two, one is walking distance from my nephew's place, sure the mouth will water a bit, but I try to only eat them on special occasions or when training a new group of contractors.