Difference between 60hz and 120hz?

[slowmo]

Hynad said:

slowmo said:
I think the difference of a 120Hz TV to the 60Hz TV's is more to do with the beefed up scaler they use in the TV's rather than any actual big wow factor from the frequency as most sources will never exceed 60Hz except for 3D content and PC's.

The main benefit I see with 120Hz sets is that unlike 60Hz sets, 120 is a multiple of 24. 

So the standard of 24 images per seconds from the movie industry fits confortably in there. Meaning that the TV doesn't need to do the 3:2 pull down to compensate. Which introduces judders especially noticeable during camera pans. 24 FPS actually fits 5 times in 120. So the TV plays each frames 5 times, making for a smoother experience than on 60Hz sets.

That's only Bluray sources really though, every other source would usually be 60hz.  I just don't see the point of creating extra virtual frames personally.  My projector supports 24-120 hz but that was bought for 3D mainly rather than any perception of smoother performance.