If you fly AA to Europe, this promotion may apply as well.

Dates:
Book between July 20, 2006 and November 15, 2006
Travel between September 5, 2006 and November 15, 2006

Offer:
Fly round-trip (or two one-way transatlantic segments) on American Airlines between the U.S. and London, Frankfurt or Zurich and earn:
5,000 AAdvantage bonus miles for Economy Class fares booked in Y, B or H
2,500 AAdvantage bonus miles for Economy Class fares booked in K, L, or M
Register prior to travel by clicking the red register button below.

Restrictions:
Members residing in the U.S., Canada, Puerto Rico, and the U.S. Virgin Islands

You can find this on the "Special Offers" page on aa.com.

You DO have to register for this.