Oh yes. I'm very tempted by one of those too. But it's only a year since I got my 'dome' iMac and there's no way I can justify it!
It's a pity they didn't make it wireless as standard, as then the only cable you'd need connected to it is the power cable, which would be as neat as you could get!
I've already got Airport Express, so I could always save some by taking the card out of the old iMac and installing it in the new one, but even then, I can't justify it.
But I wants one! My preciousss!!