McGraw-Hill.com
McGraw-Hill published basically every textbook I read until I was 18. They have a lot going on and are branching out into some new tech markets. They approached me to develop a couple pages for them for their new products. I used basic HTML5 and CSS3 practices and a little javascript trickery to keep everything cross-browser compatible. Having everything work the same across browsers but without resorting to images or gasp Flash was key here and I invested a lot of time developing code that looks great on modern browsers and degrades well in Internet Explorer.