Some of the features I liked to list it down, to show how compatability the CSS 3 is....
Grading styles in border
border: 10px solid #000;
-moz-border-bottom-colors: #2dee28 #1fdd1a #18ca14 #0eba0a #0ca809 #099705 #098706 #077c04;
-moz-border-top-colors: #2dee28 #1fdd1a #18ca14 #0eba0a #0ca809 #099705 #098706 #077c04;
-moz-border-left-colors: #2dee28 #1fdd1a #18ca14 #0eba0a #0ca809 #099705 #098706 #077c04;
-moz-border-right-colors: #2dee28 #1fdd1a #18ca14 #0eba0a #0ca809 #099705 #098706 #077c04;
padding: 5px;

Rounded corners
background-color: #38c0ff;
-moz-border-radius: 20px;
border: 5px solid #0475a9;
padding: 10px; color:#00283a;

Not the thing it should be rounded corners, just increse the radius and see....
Multi column layouts
-moz-column-width: 150px;
-moz-column-gap: 10px;

According to the resolution column automatically created...even it can be a fixed column "-moz-column-count: 3;"
For more features of CSS 3 http://www.css3.info/preview/