It's a nice, clean look, but the header is -enormous-, and I don't think it displays properly unless your screen is 1280 pixels or wider. I'd move the page content towards the right and the header to the left (in other words, center it), and make the header take up less space (both horizontally, and vertically), or at least use small enough font that it won't wrap around all strangely if they're using a smaller screen.
Keep it up. :3