Mormons believe in three heavens and one hell. The celestial kingdom is the most desirable:
There are also different sub-degrees of glory within the celestial kingdom, and the highest degree can be reached only by couples who are married together in the temple, and in which the husband has joined what Mormons call the “Melchizedek priesthood." (Pretty much every devout male Mormon joins the priesthood by the time he’s married.) Those who attain the highest degree become gods in the afterlife, meaning that they can bear new children in heaven, and may even have their own planets.
(Artist Rendering of Eternal Progression via the Utah Lighthouse Ministry)
The Dish 