Those of you who own American Express Centurion or Platinum cards can register here in order to receive up to a $200 statement credit for airline incidental fees per account (not per user).
You must pick one airline to get the credit for. These incidental fee credits are only good on US airlines.
What are incidental fees you might ask? Checked bag fees, in flight meals, flight change fees, airport lounge day passes, and incidental charges with award tickets are a few examples.
You can register and get up to $200 credit for 2010 and receive another $200 credit in 2011.
You can watch an informational video here.