Clay is an UI/UX design and development agency in San Francisco working with brands such as Google, Sony and Uber. The website is straight forward and reflects the craftmanship of what UI and UX designers do. Clean, nice use of typography, easy to navigate and tells you instantly what they are all about.
Plastic is a typeface designed by Ivana Paleckova and Jitka Janeckova. The website for Plastic is really great. It is dynamic, interactive, bold and colorful. You can test the size, weight and chain of the typeface by typing your own message.