[Update 11/3/2011] Now there is a slightly better deal: 50K miles (after spending $2,500) + $150 Statement Credit after 1st AA purchase + two lounge passes + 1st year free. Please visit the new landing page.
[Original Post 10/21/2011] The amazing 75K Citi AA offers (you have potential to hit a total of 225K AA miles if you sign up all three) have obviously expired. They were supposed to expire long time ago but Citi did not pull the links off its website until recently. If you missed the boat, now there are a around of new offers to earn up to 150K AA miles (50K each for Visa, Amex and Business). All three offers can be found on the same landing page.
Each card offers 50K miles after $2,500 spending within 4 months, two Admiral Club day-passes, and a waiver of 1st annual fee ($85 for Visa and Amex and $75 for Business). If you use two different browsers (clear the cookies first) for Visa and Amex and you also apply a Business card, you may very likely receive 150K AA miles. Another interesting feature is that Citi finally enhance the AA cards with 2x bonus on American Airlines purchases, inline with all other major airline affiliate cards.