Just a thought on the sideline: It is worth remembering that often, simple is beautiful, and adornment should always be justified; sometimes, it may uglify, or messify, rather than beautify.
Tons of them. In the past, I've got my inspiration from the following URLs:
Jacob, I agree.
Sudarshan, thanks for taking the time to dish out some links. A few of those I like a lot!
Too bad the Typography forum is slow moving around here . . .