Yes, I did spell that correctly. And the Mayan belief was that Quetzalcoatl will return too! Quetzalcoatl is an Aztec sky and creator god. The name is a combination of quetzal, a brightly colored Mesoamerican bird, and coatl, meaning serpent. Quetzalcoatl is often referred to as The Feathered Serpent. More importantly is the spiritual message: the combination of earth and heaven. Ring a bell?
The completion of the Great Mayan Cycle was associated with his return.
The Feathered Serpent was important in art and religion in most of Mesoamerica for close to 2,000 years, or until the Spanish conquest. Civilizations worshiping the Feathered Serpent included the Mixtec, Toltec, Aztec, who adopted it from the people of Teotihuacan, and the Maya.
The cult of the serpent in Mesoamerica is very old. The snake represents the earth and vegetation, but it was in Teotihuacan (around 150 BC) where the snake got the precious feathers of the quetzal, as seen in the Murals of the city. The most elaborate representations come from the old Quetzalcoatl Temple around 200 BC, which shows a rattlesnake with the long green feathers of the quetzal.
The worship of Quetzalcoatl sometimes included animal sacrifices, and in most traditions Quetzalcoatl was said to oppose human sacrifice; however, in several of the Mesoamerican cultures human sacrifice was a deep and integral part of the lifestyle.
Bring him back, but not the sacrifices.
Everyone wants to go to heaven but no one wants to die! 
Seriously, a study of Quetzalcoatl is foundational to the Dec. 21, 2012 date- and all that might or might not be!
