The high refresh rates of the new LCDs were designed to eliminate a problem which never existed with plasma, mostly blurring of high motion objects.
But because they've got these high refreshes some manufacturers have gone to interpolating in between frames to try to make things look smoother. These false frames seem totally unnatural to me (and many others), and disable this feature to have the set only display those frames which are actually present in the original data. Some plasmas have frame interpolation, but not to the same extent that LCDs do. So if you're looking for that super-smooth, but false, "soap opera" look, then maybe a LCD is better suited to you.
