Thanks Phil. Being here in Chicago, we have done the trips to Wisconsin. I've mostly been pleasantly surprised with the scenery. Door county is a lot of fun with all kinds of water-things to do. Lots of really great ( and relatively inexpensive) log cabins/B&B places you could rent out.

We still gotta make it out to Yellowstone.

Also, check a site for traveling parents that one of my friends just started: trekaroo.com some good tips for parents by parents about traveling to various places with kids.