Any good LCD cleaner?

You shouldn't need anything particularly exotic, but if you want to keep the screen fresh and be really careful you can get a pack of microfiber cloths (either online or at supply stores like Staples). If you use cleaning fluid just wipe if off quickly so that it doesn't drip into the bottom of the screen.

The link is the right sort of thing. There's not going to be much difference between different microfiber cloths, there more or less the same.