(Video Link)
Jason Steffen is a particle physicist who works at Fermliab. He's used his knowledge of complex systems and motion to develop an airplane boarding procedure that is more efficient than those currently in use:
In his method, first, alternate rows on one side of the plane board, but just the window seats. Then the other side boards, in alternate rows with one row between each passenger. Again, window seats only. Then back to the other side, with the middle seats this time. And so on. The result is a beautiful choreography as rows of passengers simultaneously stow their luggage and take their seats in tandem.
Link -via Popular Science
2. Efficiency is not an issue and therefore should not be a consideration.
3. A significant number of people do not follow the current boarding rules. They will be no more likely to follow this system.
:P