Click "Finalists" at the bottom left, I like the diagonal expanding slides.
http://www.noupe.com/design/40-websites-with-unusual-navigation.html has cool ideas.
We want something unique and innovative, but not "artsy." It has to look professional, not like a scrapbook.
I really like sliding page navigations and slide expanding navigations! I also like diagonals, but I'm not restricted to that if something else looks better.
Also, I'm not extremely set on where the navigation must be but what I absolutely don't want is a bar down the left or right side like ours currently is now. Top, bottom, above or below header, or arranged creatively around the home page, that's all fine with me.