Yes I went to the one in IL with my friend this summer.
It was neat looking at all the many, many things that they had but it was hard to locate the furniture. It was also difficult to find someone to help us. It seemed like not many people that we came in contact with spoke english for some reason. My friend absolutely loved it....she likes the more modern, futuristic looks (lots & lots of silver).
They had a lot of different rooms set up: bedrooms, kitchens, bathrooms, etc. rooms that all matched, coordinating sets, etc. You can definitely get many different ideas from there. I think the best thing I bought was this cool looking wavy mirror. My friend bought some really cool gymnastic type swing sets for her kids to play on, that you can hook up in your own home.
I agree....IKEA was absolutely packed when we went & it was on a weekDAY!