Samsung 46" lCD (ln46d630)

Auto motion Plus (off/clear/standard/smooth/custom) what do i need to use for 120Hz. I picked this tv up this past tuesday but have yet to see 120Hz every program I have watch movies, sports etc it say 60Hz is that what their broadcasting in? Tommorrow i will be wide open for NFL for the 1st time and want to take advantage of the 120 Hz.

The TV is displaying the source rate, that will almost always be 60 Hz. The display is still updating at 120 Hz. Personally, I have AMP set to custom, 8/2 (LN46B630). Does a pretty good job of eliminating motion blur, and I don't see any Soap Opera Effect.