As someone who tried constantly in the past to get that film cadence in my computer animations, ironically I am one of the few who seems to like FI in my movies.
It took about 1 hr to get used to it on my Sammy (120hz, 'AMP'(FI) = high), and the first movie I watched was American Gangster, which really did look like a soap opera with it on (due to movie itself), but after watching a few more, I really started to like it.
To me, it was all the visual quality of film, but with the smooth motion of video (or even beyond; 120 fps), a win-win.
The Sammy's FI seems to actually figure out which direction entire objects are moving, and creates sub-frames based on it, not just simple frame-repeating or delta's of prev/next frame. It's not perfect, especially on helicopter shots or where the object and the background are moving in 2 different directions, but I like it, and might be better now on the newer 240hz sets.
EDIT: to stay true to topic, American Gangster = Bad FI, 300 = great FI, even more surreal