Working with wood slabs is a subset of fine woodworking.  It requires an attractive and strong support for the slab, joinery, and finishing.  No slab based tables are alike and they can be very attractive as is one of Andrew's creations in ambrosia pictured on the Home page.  Andrew writes about his experience with slab based tables and benches with respect to procuring and working with slabs.  It's a quick read and provides his woodworker's viewpoints in Slab Mania.