for me, #1 was clearly valumags (i hope my high school appreciated its 20 economist subscriptions!), #2 is anythingpoints for pl (because i can get the cheapest rooms and earn way more than from any hotel program), and #3 was the 40k nw sprint promo (i stuck my mom's phone on sprint for 18-months and that was that).

i'm guessing some of you co and nw people have achieved far greater heights with that mileapalooza stuff, but i never got a chance to participate in those promos.