I'm no expert designer by any means, but I'm anal about details. When checking your homepage against others, I found your site to has the most variations in font size, color, underline colors, etc... These font "styles" are look great and consistent within each column and header, but contrast too much as a whole, in comparison.
Also, your search-engine-grabbing text at the top (and I know you guys have probably already had roundtable discussion about the pros and cons). It works wonders sometimes, but it's something you'll rarely see in the "big dog" sites.
PS Hooray for your engineers