Yeah, I just looked it up:
Pay-Per-Ride MetroCard or Cash
How do I get the holiday half fare bonus?
Simply use your Pay-Per-Ride MetroCard the same way you always do. The subway turnstile or bus farebox will register the payment at $1 for regular customers and 50 cents for Reduced-Fare customers. If you pay cash on the bus, simply pay $1 in coins (no pennies).
Breakdown of the Holiday Fare Info.
But when did New Hampshire become--Such a backward wasteland of seatbelt hating crazies?...I mean, only 40 people actually live there. The others are just visitors who come for the tax-free liquor and three inches of novelty coastline. John Hodgeman on The Daily Show (1-30-07)