I like Trent Walton’s blog. He is clearly a thinker, but more importantly, he is also a doer. Based in Texas, Trent designs a unique look for each of his blog posts and demonstrates the exciting possibilities of what can be achieved in web typography through a combination of CSS and Javascript. And yes, of course the layout is responsive!
Here are some screen shots of his latest entries, but to experience all the little surprise details first hand you will have to go to trentwalton.com and snoop around. For the richest experience, use a Webkit based browser like Chrome or Safari.
As an aside, take a look at the cool folding effect Russ Maschmeyer put together on Typekit based on the above post.
For more of Trent Walton’s work, take a look at his web design agency Paravel. Besides client projects, they create some awesome and useful Javascript tools for web typography like Lettering.js for down-to-the-letter control and Fittext.js for scalable headlines that fill the width of a parent element.