There are several methods to baking a potato, but this is my favorite because the potato skin is crispy and salty and the insides are soft and fluffy. - Also saw Alton Brown do this method. It works great! No more bland potatoes!
Slice whole potatoes almost all the way through, so that the slices are all still attached at the bottom of the potato. Drizzle with olive oil and your favorites potato seasonings, bake for about 40 minutes at 425