Beef up your JavaScript-fu: JavaScript Weekly, a weekly JavaScript newsletter; learn about Higher Order Javascript; take advantage of all the cool new features in iOS 4.2.
Browserling offers interactive cross-browser testing in your browser; CSS3 Pie support in Compass might ease that pain.
Struggling with color coordination for your site: check out COLOURlovers.
Fresh: use Ruby in your shell.
I’m digging Fuubar, a instafailing RSpec progress bar formatter.
Wish it didn’t require Java; Boilerplate extracts the meat from any Web page.
Photo, from this presentation.