http://www.nikonchat.com/nikon-d7000-sdhc-card/

Memory card for the new nikon d7000?
As ordered the Nikon D7000, but need a memory card (or two:)) and I wondered just worth spending the money for the 16GB SanDisk Extreme – SDHC Memory Card Class 10 performance? Have a 4 16gig but the class at half price …. I make video HD in it, but above all the photos …
You want to go at least a card class 6 or higher, if you are doing any type of recording HD. A class 4 is sufficient if it is just pictures. It is also wiser than you buy a smaller capacity memory cards instead of a card large memory size. Although they are more resistant than they were years ago, can still break and malfunction, so some cards as a copy security will be a wise choice. In addition, smaller cards encourage your pictures and videos on your computer and make a backup of them more timely, which is a good habit to keep what you do not lose all your photos in the case of an accident. 2 or 3 cards of 4 GB should be good to go. If you shoot RAW and HD video, you may want more.
Unboxing my pair of New Transcend, Ultimate, Class 10, 32GB, SDHC, Flash Memory Cards