Call me weird but I don't like the how the 120 hz makes LCDs look because it looks kinda chooppy and awkward to me but you should be able to tell between high and low...I would think high would seem more choppy. This is just me though. Maybe I am wrong.
On my 52a630 I cannot see any difference with the 120hz set to low ,med., high or demo. I checked it viewing ice skating, tennis, football, & movies(I don't see the 'live' look some mention). My input is dish HD reciever set to 1080i. I tried HDMI and component input. I also tried my old DVD player through the component input but no difference 120hz on /off. I should mention the PQ was so bad (grainy and blurry) I would not want to view any of my DVD's on this set. The DVD's are super clear on my 35"crt.
Is there some procedure to verify this feature is actually working and what about the poor DVD picture.

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