That rippled texture is intentional, it is known as orange peel. It is caused by 'thick' application of paint. It was done by some manufacturers to create resistance to chipping (which doesn't seem to be working for Keith W.). Unfortunately I don't know how many people have had problems with paint chipping on the lower portion of the doors.
As a side note, you may notice an 'orange peel' appearance on many late model cars. Many manufacturers started trying for this look because it hid some paint application problems.
