After lots of thinking, I finally bought a 24" iMac to replace my Powermac G5 
So far, I'm extremely impressed - it's amazingly quick (it's the 2.16GHz Core 2 Duo with 2GB of RAM), and the screen is absolutely fantastic.
So yes, if you're thinking about buying an iMac, do it!

So far, I'm extremely impressed - it's amazingly quick (it's the 2.16GHz Core 2 Duo with 2GB of RAM), and the screen is absolutely fantastic.

So yes, if you're thinking about buying an iMac, do it!