Smashing Magazine, or rather its users have created 45 beautiful header designs that you can use for free.
38 of Smashing Magazines users contributed over 100 designs, which were then whittled down the top 45. The designers have provided details on their designs, along with their intentions, and some examples of how the headers could be user. Nice to see that you can download the PSD files used to create the headers, so you should be able to adjust the headers to your needs.
