Via View From The Wing, earn a quick and easy 5,000 Membership Rewards points for signing up for their "Pay Over Time" option. This allows certain larger charges on your American Express Green, Premier Rewards Gold, or Platinum card to be paid over an extended period of time instead of paying them in full every month. You don't actually have to use it to get the 5,000 points, you just need to sign up so the option is there. Personally, I would avoid using this feature since you will be charged interest on the "Pay Over Time" amount.
Per the fine print, you must already have a Membership Rewards account at the time of enrollment, and bonus points will be credited to your account within 6-8 weeks after enrollment. The Bonus ID on this offer is 5670, 5671, or 5688 (I believe depending on the card type you have). Enroll by December 31, 2011.