What cleaner should i use for my monitor screen?

"CAPTAIN GENIUS !!" is right, I just wanted to add on one thing, you should wipe it from one direction to the other, left to right or right to left (your choice) and then one vertical wipe at the end to collect any dust/debris build up (top to bottom or bottom to top, your choice). Don't rub it in circles or back and forth, etc and stay away from paper towels/tissues. For the same reason you shouldn't use them on eye glasses, the wood fiber in them is sometimes large enough to cause scratches, especially on the soft plastic of LCD screens.