Let's all have a love-in for Webkit, the first browser to officially support the new W3C Selectors API.
It seems there is a lot of love coming from Webkit these days. Once, you were the illegitimate bastard love child of open source KDE and Apple. Now you've grown into a fine young browser engine, your parents have reconciled, and you're spreading your seeds on new horizons.
Over the course of the last year you've introduced significant, useful enhancements for developers, like CSS 3 border images, multiple backgrounds, rounded corners, multi-column layout. Not to mention your ever increasing support for SVG.
And now... sniff... you've given us nifty JavaScript API enhancements that blow the doors off the ways of old.
You're growing up so fast...