Adorama is running some bundle discounts right now on both Lexar and SanDisk SD and CF cards.

The Lexar bundles are 2-packs with nice discounts (which can be found at some of the other large retailers such as B&H, etc. as well). SanDisk has both 2-packs available at similar prices and also bundles of an Extreme Pro card bundled with an Ultra 4GB card and Lowepro 12-card memory wallet. Some of the best SanDisk prices I've seen on their faster cards recently.

Since it looks like there aren't going to be big card rebates this year, may be time to stock up if you need some memory cards.