From Starbucks:

Receive a $5.00 Starbucks® Card when you purchase either two (2) 16-count packages of Starbucks® K-Cup® packs and/or Tazo® K-Cup® packs or three (3) 10-count packages of Starbucks® K-Cup® packs and/or Tazo® K-Cup® packs together in a single transaction by 9/30/12.

Find out how to get the $5 Starbucks Gift Card here.  You can mail-in a form or submit online.

You can also enter to win a year of K-cups packs from Starbucks. No purchase necessary.