First we tweaked the app indicators, and then we tweaked the color, and now we've finally come all the way back in our Time Machine (oh yes, pun very intended) to two weeks ago. Innermind Media, the folks behind WidgetWizard, are probably a little angry at Leopard, considering all that Web Clip functionality, and so they've released a free widget called DockDoctor that will subtract a dimension from your Dock with the click of a button (and bring it back with another click, which is probably just as valuable).
I know it's not for everybody. I know some of you love the new Dock, or at least have gotten so used to it that it doesn't bother you. But this is OS X we're talking about, and so you should have the right to make your Dock look the way you want it to.