Ok,
some tips and my personal opinion.
1) Never use dynamic mode on the Viera. colour balance and white deatail are all over the place, plus the default contrast is to high. I am fairly certain that the dynamic mode is put on this plasma just to help show it off in the show room
2)As Piers has said above, put it in cinema mode and keep the settings low for about 100 hours of use. This is when the plasma is at its most vunarable to screen burn (although the panasonics are now very resistant to it)
3) Use a calibration disc such as DVE or AVAI to proberly set brightness, colour, sharpness, ect, once the plasma has been run in. If you dont have one of these then you can use the THX optimser that is found on some DVDs such as the starwars ones. However the THX optimser is designed for that specific dvd so only use it as a ruff guide.
4) IF you know what you are doing, overscan can also be adjusted if needed, by using the DVE disc test patterens. However, If you are not sure how to do this then leave it alone. You can do more damage than good if you mess around in the service menu with out knowing what you are doing.
5) To obtain optimum picture a pro ISF calibration can be done to the screen. This is done by a qualified isf engineer with colour analiser equipment and other devices. THIS IS WELL WORTH THE MONEY (Piers, or gordon from these forums will be able to do this for you)
Conections.
1) Sky digital/sky plus to AV1. Make sure that sky is set to RGB and 16:9 wide mode for best picture.
2)DVD player is best when conected to the componenet inputs of the Viera. If you do not have a DVD player with component out puts then use RGB/ Svideo conected to AV4. AV4 is a shared input and will take all these signals, plus standard composite is needed.
Hope this has been of some help.