Discovery Channel Store has a great ONE DAY deal on the Planet Earth DVD Sets:

Discovery Channel Store – Planet Earth DVD Set only $29.99 (standard) or $34.99 (blu-ray) + Free Standard Shipping & Gift w/ $50 Purchase
Posted on 1/13/09 and Expires on 1/13/09

More Discovery Channel Store Coupons:

• Discovery Channel Store - Free Shipping w/ $75 Purchase using coupon code FREESHIP (Posted on 10/21/09 and Expires on 12/31/15)
• Discovery Channel Store - Discovery Sky & Land Telescope only $159.95 (Posted on 1/3/08 and Expires on 12/31/15)
• Discovery Channel Store - Gift Certificates (emailed to recipient) (Posted on 12/24/06 and Expires on 12/31/15)

Find More Coupons