This is the best plugin of its kind. I tried great many before I settled with this one. The primary selling point has to be that it doesn't replace the CSS spec, but extends it. It simply makes JQuery transformations behave like one expects them to.
It has saved me a whole mess of time in the last year that I have been using it. Had it not already existed, I would've basically had to make it myself. When I noticed that the updates have moved to Binpress, I pulled out my wallet with no hesitation.