Pledge (Polish) has a new product, Pledge Electronics. Its a silver can that resembles a can of regular wood polish. Its says on the can that its for use on Laptops, Tablets, TVs and Smartphones. I cant recommend it enough. We use it on my Galaxy S3, Galaxt Tab 2, TVs, Laptops and my partner's iPhone.
Just spray a bit on the screen ans wipe all over the screen and back of the tablet with a soft dry cloth. It leaves no residue or smell. It makes the tablet look brand new and I've even found it removed some minor scuffs and scratches.