A couple of neat-o things I hit on today:
Quick Tip: Understanding CSS3 Gradients
This covers Firefox gradients as well, but I wish these people would just get together and make one syntax for it in CSS. This is like late-90’s HTML all over again.
A Guide To Using Custom Scrollbars On Your Site
Also like older CSS (remember when you’d see custom scrollbar colors?), but much nicer-looking. Could be useful for web apps.