You should watch this programme that was on BBC last week:
http://www.bbc.co.uk/iplayer/episode/b010tbnd/Business_Nightmares_with_Evan_Davis_Doomed_Designs/
One of the sections in it was about New Coke and how, when Coca Cola launched a new product that most people preferred in blind taste tests, it absolutely flopped when launched in public.
Beat me too it