American Airlines is celebrating the 25th anniversary of its AAdvantage program and this promotion is part of it. As mentioned on FlyerTalk:

• Earn 25,000 Aadvantage miles after $250 in purchases
• Available in both Business and Platinum Select versions.
• Only valid for new accounts
• 1-800-324-3405 for CitiBusiness. Valid through 7/31/06. $75 annual fee.
• 1-800-848-5536 for Platinum Select. Valid through 7/31/06. $85 annual fee.

It’s been pointed out that the value of this offer relative to the offer for 20,000 miles and no annual fee is debatable, since you’re essentially paying $75 for 5,000 miles which is not a great deal.

If you’re interested in applying online or want to see the full terms and conditions, the direct link is here.