One of the things that I really like about the Vedic tradition is the freedom one has to envision the divine in whatever form you want; male (eg. Shiva), female (eg. Parvati), animal (eg. Hanuman), with attributes (eg. Saguna Brahman) or without (eg. Nirguna Brahman).
On one hand, the Shiva lingam is a symbol of the formlessness of the divine. But in the photo above it is almost shocking to see the image of a face traced out after the lingam has been coated with vibhuti.