The ask.com search result page is split into two “frames”. The main content container (search results) scrolls, but the left navbar and top tabs stay constant. I haven’t come across this feature anywhere else, and I wonder how important it is to the user, but it’s an interesting idea. It is useful if you really want your users to use your navigation after they have reviewed a bunch of results.

In general, the ask.com results page feels very clean and concise.

A whole new navigational element fit in a couple of pixels under the selected tab (gather.com)

a logo that pops, 6 tabs, and a search box with a dropdown. lots of stuff, but it works. etsy.

Nice concise tabs underneath the header — they fit a lot of tabs onto two lines. I especially like the different colors in the first row.