I just can't understand how could they make such bad move with the 24" iMac screen.
The iMac is IMHO a living room computer, people (like me an my girlfriend) go for it because it is a good looking piece of furniture that can optionally also be used as a computer, sometimes.
From this standpoint, having a bright screen is not that much of an issue. It would be if you were to use for critical photo editing work, but that is not what the iMac was designed for.
I do not rely on it for anything critical, I still have my workhose 3 years old 2 Xeon PC that has never let me down a single minute. I might replace is with a Mac Pro sometimes next year when PS CS3 is released, or maybe not.
By the way, the iMac is back and works fine for now, who knows until when that is going to last...