Janko really likes the top navigation implemented on Vimeo.com. He wanted to recreate it, so he has published an article called “Create Vimeo-like top navigation“.
We can learn how to create a functional and good looking Vimeo-like top navigation in this tutorial. What he likes the most is the menu that drops down when you hover search box. It offers you different search options that you can choose and narrow your search.
Source: Create Vimeo-like top navigation