Cleaning An LCD Monitor 
 
It wasn't all that long ago that I swore I'd never own an LCD monitor.  The refresh rate wasn't as fast as a regular CRT, the picture wasn't as sharp, and they were fairly pricey.
Typically, the next thing I know, I own three LCD monitors.  One for the computer, a small LCD TV that sits on the computer table, and my new GPS unit for the boat.
The problem is how to clean the screens.  The biggest no-no is using a cleaner with ammonia in it, like Windex, because it'll eventually eat the hell out of the screen.  The second biggest no-no is using a liquid.  Unlike a CRT, which is sealed, an LCD has layers of laminate and, if the liquid gets down to the bottom of the monitor, it can wick up between the layers and the monitor's history.
The answer is Windex Wipes:
These are moist towelettes in a re-sealable package.  No ammonia, no liquid.  While I didn't see them at the local Publix grocery store, the Winn-Dixie had them, so they're around.
What's interesting is that they clearly show how important ammonia is to regular Windex.  Rather than just cutting through the greasy fingerprints like Windex does, you actually have to scrub (lightly!) the tougher spots to remove them.
They also make a dandy cleaning rag for the rest of the computer once you're finished with the monitor.  They don't leave any sticky residue like 409-type cleaners do.