This tutorial uncovers a superb technique for CSS3 box-shadow in IE6-8. (The above is actually an image. Visit User Agent Man to see the CSS version)

An oldie but a goodie. A really super walkthrough the design process for mobile responsive websites.

Some excellent techniques to take away and incorporate into your next design.

input,
textarea {
        width:100%;
        -ms-box-sizing:content-box;
        -moz-box-sizing:content-box;
        -webkit-box-sizing:content-box;
        box-sizing:content-box
    }

Create a retro cityscape in photoshop