A blow molded, hollow plastic container including two opposed, relatively longer sidewall portions which alternate with two opposed, relatively shorter sidewall portions. In some embodiments, the coating comprises greater than 10 wt-% of non-ionic unpolymerizable surfactant. improving the sense of depth in two-dimensional images of three-dimensional volume data, said 2D images being generated using volume rendering. The trench also provides a convenient buried contact to the RF ground.