Wonderful details

I’ve always been a fan of interfaces. Sometimes you come across wonderful details on websites that are hidden in plain sight. I’ve compiled a video of four wonderful details at Flickr, Google+, Kickstarter and Akismet.

I got a few of these examples from the great littlebigdetails.com, a wonderful collection of nifty interface details from around the web. I would also love a site with wonderful details in real life, does anyone know such a site?