Well, youtube still stinks with the ATI drivers someone posted earlier. Youtube is really choppy and basically unwatchable.
It has helped opera browsing. Everything seems to render a lot faster. Whenever I would zoom in from full page view it would take a minute or 2 and I would get the white checkerboards. I see less of it now. I'll probably keep these drivers since don't really use youtube at all but I use the web browser every now and then.
TF3D seems to react faster too. Maybe it's a placebo though.