Is there a difference between 120Hz and 60Hz TVs? Philips proved there is a noticeable diff at CES 2008 today, showing last year's 60Hz 42-incher mounted below this year's 120Hz 7403 display. In a moving, panning image, the jumpiness of the 60Hz video was apparent compared with the butta-smooth motion of the frame-doubled 120Hz 7403 monitor mounted above it on the wall. Another astonishing stat of that 7403: its 2ms (that's milliseconds) refresh rate. However, whenever the image was static, the difference between the two wasn't noticeable. Available in May, this 42-inch smoothie will be $1799, its 47" brandmate will run $2099, and the biggest one of the Philips 7000 series, a 52-inch display, will be $2799.