In case anyone is planning on placing an order anytime soon:
GAP.com offers 25% off regularly-priced apparel for Men & Women, and 15% off Babies & Kids with code GAPNEW. Additionally, you may save 20% if you use your VISA as payment and enter code VISAWEB20. Shipping is free if you spend $50 and enter code GAPSHIP50 at checkout.
The 25% off excludes all pants, as far as I'm aware.