I'm selling my old Samsung 26" off on ebay but I need to clean the glossy plastic up a bit as it sports a fair few "speckles" of dirt/dust/grime. What would be best without ruining the shine of the plastic?
Ultra-soft (aka optical-grade) microfibre cloths are your best bet - damp (not wet!!!) then dry, as Messiah suggests - in our experience. And our photographer spends a lot of time cleaning our fingerprints off test TVs before he shoots them!