Mandala Meditation

The word mandala comes from the Sanskrit translating to "circle" or "disc" it also means "containing" or "completion." Mandalas are spiritually significant in Hinduism, Buddhism, Dzogchen, and to many more cultures and individuals. They can be used for spiritual rituals, and to aid in meditation. Carl Jung believed mandalas to be "a representation of the unconscious self." He said, "The goal of contemplating the processes depicted in the mandala is that the yogi shall become inwardly aware of the deity. Through contemplation, he recognizes himself as God again, and thus returns from the illusion of individual existence into the universal totality of the divine state." A mandala represents the wholeness and entirety of the universe, it is present in the big and small, microcosm and macrocosm. Circles with centers exist everywhere, in the anatomy of an atom to galaxies swirling in outer space. Invite yourself to explore mandalas, find your own center and radiate both inward and outward.

Mandala Meditation - Physical

Here is a mandala meditation from OSHO for natural centering.
The meditation consists of four 15-minute parts.

1 - With your eyes open, start running in place, starting slowing and gradually gaining speed. bring your knees up as high as you can. Breathe deep and evenly, forget the mind and body, keep going (15 min)
2 - Sit comfortably with your eyes closed, the mouth is open and loose. gently rotate your body side to side from the navel point like a reed blowing in the wind. Feel the energy in your navel center. (15 min)
3 - Lying on your back with your head still, rotate your eyes in a clockwise direction. Full circle, around the sockets, as fast as you can. it is important to maintain a gentle and even breath, make sure your jaw is relaxed. (15 min)
4 - Lie still with your eyes shut. (15 min)

(more at http://www.osho.com/Main.cfm?Area=Meditation&Language=English)

Mandala Meditation - Visual

Meditations aided by a visual Mandala

Tantra Mandala
Unspecified Mandalas: 1, 2, 3, 4, 5, 6