Not the old fashioned CRT cleaners. tesco, Asda and the like sell a LCD cleaninhg kit for under a tenner.
Contains fluid and soft wipes.
Always use gentle care with these screens...(I have 2 Large TV's and 4 PC LCD's.
A touch of fluid and gentle strokes works fine.
Truth be told, the worst thing I find with client's is FINGER PRINTS on the screens. Aaaarrghh!