Ikea has an offer of $50 off for purchases of $500 or more upon presentation of the coupon from their catalog. Not sure if they'll except a print-out or if you need to grab a catalog in-store and then show the coupon at checkout. Limit 1 per customer and valid until the 13th of March. Only available in East Coast stores.
Update: I called ikea and was told that gift cards are excluded from this promotion.
Some discussion at Lifehacker