I don't know if it's just me, but one of the first things that catches my eye is the offset email/login boxes. They should line up. 'nuff said.

Your content area looks decent, although I'd say you should consider changing your method of flexible-height design. On pages with less content, you just see a huge blob of green (e.g. "Contact Us"). The green should just be a border around the content, not a filler.

Otherwise, the site is very clean and easy to navigate. Good job on the design.