My kids broke my 24" iMac last week, they snagged the power cord and it went flying off of my desk and smashed the screen. My insurance company picked up the iMac this week with the view to repair or replace it. Kinda hoping they replace it with the 27" one now, seeing as it is cheaper too.
Also, beware, Apple didn't use safety glass so. If your iMac glass screen breaks it shatters and is razor sharp.