Cleaning the Screen
After doing a fair bit of research a few years ago on cleaning the screen, I found some great advice about using a high quality micro optic lens cloth and a water-vinegar solution. This combo works like a charm and gets those fingerprints off my screens really well - I lightly dampened part of the lens cloth, wet the screen, then dry it with the rest of the cloth.
The lens cleaning cloth I use is about 8 x 8 inches (20cm x 20 cm), and can we washed and reused again and again. Since they're designed for cleaning $5000 lens, they won't scratch the screen, and are available in every photo shop. And the trace of vinegar seems to cut the fingerprint grease really well. As klearscreen (the makers of iKlear note), you definitley don't want to use normal window cleaners.
http://www.klearscreen.com/faq.html#Anchor
The problem with many cleaners such as 409 is the heavy chemicals that they use - there will probably be some residual traces left that may not be so great for the finishes over time (and should probably never be used on screen).
I've tried the Fellowes wipes, but they always seemed to leave streaks that drove me crazy. I usually ended up cleaning the screen about 5-6 times in a row just to get rid of them.
I also had my original Ti Powerbook 400 into MacResQ for a CD-R upgrade, and they did the screen buffing with the iKlear system (this was due to the keyboard impressions that the old Powerbooks used to leave on the screens). While it did really clean things up, the water and light vinegar solution is great when you're on the road away from your iKlear supplies. Just toss the light cloth in your bag with you.
I should also mention that as a photographer, I'm a nut about cleaning my lens daily (as well as the windscreen of my car every time I gass up). It is so nice to be able to see your screen as well!
David