How do YOU keep your macbook clean?

Mine is a month old, and i use a damp cloth with a very mild, very weak solution of washing up liquid. it helps to remove grease and marks from not so clean hands.
i use wet wipe, tft cleaner for the screen and the i rub any streaks with a dry disposable lintfree cloth, again one branded for tft type screens.

Steve

2 months old, Black, Week 23. I have a RadTech microfiber cloth that I keep on the keyboard when the unit is closed and use to dust off the screen and trackpad. Every couple of weeks I use I-Klear cleaning solution to clean off the screen and polish the exterior case. I am exceedingly careful with my MB and so far do not have a scratch on it, though I know that will not last!

about 8 weeks old, white macbook.
um.. haven't gotten around to buying a microfiber cloth for it or anything, but my MB is still pretty clean.. and why? because i wash my hands a lot before using it. and even though it's really annoying to remember to wash your hands before touching the keyboard, it's a sanitary way to keep it clean for a while? haha i dunno.

Black

very soft microfibre cloth for the body. heat from rubbing cleans any fibgerprints or smudges or dust. about 30 seconds a day.

eyeglass cloth for the display. once a week.

still looks mint.

I have a week 28 black MacBook (this coming Monday will mark a month since I have had it in my hands.) I clean it using nothing more than a damp cloth, afterwards I dry it with a dry cloth. No special cleaners here, a little water on the rag has proven to be a good solution.

For the screen, I use the Marware cloth.