Not that it is a real problem to scroll back up to the top of the page, but if it isn't hard, would you consider putting the same buttons you have on the header, down below, or "back to the top" button. I find myself at the bottom of the page alot, and it might prove to be convenient.
(don't take it the wrong way, Jeff because I love the site the way it is, the effort you put into it and if there's ever anything I can do to help, just ask.)
