Although I like the way the original site is straightforward (usability for those new to the web), vimeo does a killer job at integrating their login form into

Although I like the way the original site is straightforward (usability for those new to the web), vimeo does a killer job at integrating their login form into the site design...it actually looks like it's supposed to be there, as opposed to most log-in forms that just look slapped on.