British Airways has a great fare to London in their World Traveller Plus cabin. From New York it’s only $269 each way (plus out-of-control taxes) this fall. World Traveller Plus has 38" pitch and wider seats than coach, making it feel like a domestic business class seat. This is really a steal if you’re going to London. Fares are pretty low from other cities as well.
(Thanks to View from the Wing for the heads up).