While you can make a butcher block out of any wood really (except toxic woods, duh), hard maple, cherry, and walnut have been industry standards for years for cutting boards and butcher blocks. They are hard enough to withstand the abuse of being a cutting board, but not so hard that it will damage or dull down your expensive knives. Since they are non-toxic, they're okay for contact with food. Not to mention, they're also very attractive woods, with a nice grain texture.
All blocks are finished with a food-safe finish.
Finger grooves and high quality rubber feet come standard on all butcher blocks.
Now go on a get one, you know you want it!