In the time before the Radeon, ATI’s drivers were notoriously bad. ATI knew that, in order to compete in the high end consumer space with NVIDIA, their driver would need to be easy to use, intuitive, and stable. Thus, the CATALYST program was born.
For the past few years, we have seen ATI’s drivers grow in stability and performance. Features have been added that have continued to push the envelope of driver development. Features such as Overdrive (automatic overclocking) and VPU Recovery (soft reset to avoid system crashes) have been added and last year, ATI pushed forward with their Catalyst Control Center user interface redesign.
There’s a lot of good information here about the future of the Catalyst. Check it out at AnandTech.