Engadget posted an interesting preview on the Samsung Galaxy S. The most interesting bit is that they claim that Samsung will not sell Super-AMOLED displays to other companies for the next 18 months. Samsung can't meet demand as it is, so this make sense.
Engadget are very happy with the display (which is a 4" WVGA 800 X 480). It has terrific color and vibrancy. "this is one of the finest displays you can hope to lay eyes on". Even in direct sunlight it remains usable - as long as you face it directly. If you view it from an angle, it suffers dramatically. The phone itself is impressive, but they say it's not "polished" enough.