Your HDTV has different memory settings for pic adjustments for EACH input. You have to be on the input that you want to adjust WHEN you do the adjustments.
What model Samsung BD player do you have? Have you gone to Samsung's website to download the newest firmware? You have to follow the instructions to burn it to a CD before you can put it in the player to update the firmware.
You might want to, at the least, grab a THX SD DVD (Toystory, Starwars, etc.) and go to the THX video optimizer section under the special features section of the disc menu, and set it up based on that.
There seems to be some issues with Samsung BD players and the two new Fox titles that just got released. You will need to either return these movies if it one of these two new releases Fantastic Four SS, or Day After Tomorrow. Or you can wait until Samsung provides the firmware update, but history has shown that Samsung has been about the slowest BD company to provide updates.
What BD movies did you have PQ issues with. It is good to give all this info in the original post so we can better help you in the future.
Hope this helps!