Thanks for the reply.Not the OP, but I bought the iMac.
I love the iMac, it is beautiful, fast, sleek and sexy.
But in hindsight, I should probably have purchased the Mac Mini. I'm not using the iMac to its full potential and the Mini could easily have lived a second life in a cabinet or home theater setup whereas the iMac will always have to live on a (very large) desk. Its fairly minor, and I'm still very happy with the iMac, but I acknowledge that the Mac Mini would have been just fine.
Yes, the Mini have a second life like a Home Entertainment Mac, that is very appealing.
Does the iMac might be usable as a Monitor for another Mac? Does the Thunderbolt connection allows that?
If you were to buy a Mini today, what monitor will you get?
I was at Best Buy today and spend some time with the 27" iMac and it is gorgeous, tempting and generates the impulsive urge to get one, the screen is great.