Updating Sidebar -- Add a sidebar to all your pages, and edits in one place (the .js file) will update the sidebar links across all pages.
Updating Top Navbar -- Same as above, but horizontal and responsive instead of fixed-width.
Felinium -- Top banner, updating sidebar, responsive layout. Made and named for my good pal Felinium. (DOWNLOAD .ZIP)
Eggramen's Layouts -- Lots more CSS and layout samples to use on Eggramen's site.