Thank you for your help.
Pat, this is a good question. Butcher blocks help create more storage and workspace in the kitchen, and they can be good for limited dining space too.
The one at the top of the page is an antique from one of our house tours: CHI House Tour: Christy & John's Logan Square Bungalow. You might be able to find an old piece like this on Craigslist or in the classifieds.
The one directly above is also from a house tour: AT Europe: Paris - Chez Debra. We love this one and would like to hunt at flea markets for something like it! A couple more suggestions below...
Any more suggestions for Pat?