Meet my new PC, it is a 20 inch iMac. I used "PC" instead of "iMac" or "Apple Computer" intentionally, because I do not wish to switch to the new OS. I am happy with Windows XP and looking forward for Vista. The reason why I picked iMac as my next PC, because I need a fast, quiet, high end PC what looks nice on my desk... I picked this one over a Dell, because for me iMac provided more value for money.
The amount noise (lack of actually), the very nice display and that this machine is very compact are the killer features for me, but I would not purchase this machine if it could not run XP. Fortunately Bootcamp and Parallels are here to help me and I am currently evaluating which one to use for the future, but I might will end up using them both.
Regarding OSX, as geek of course I am interested to learn more about it, but after using it for a couple of days, I do not see anything earth shattering. It is a nice OS - Ooops I almost write overhyped, but I do not want thousands of Apple zealots to start spamming the comments of this article :) - it seems to be very polished. iLife is very nice and gadgets too. But I could not found anything what would make me switch from Windows. Apple for me is no more than a hardware vendor and all the nice design, the OS are for differentiate from the competitors. In this regards I give thumbs up for Apple and I am sure that there will be an Apple logo on my next laptop....