One of the reasons I love AS. Although increasingly I am flying their partners (NW, CO), I still throw my miles to AS. They still have these threshhold bonuses. A 10,000 mile bonus after 35,000 actual miles and another for every 10,000 actual miles after that up to 75,000 miles. You get another 25,000 mile bonus if you hit 100,000 miles in a calendar year. It can sure add up.