I gotta say this is a pretty thorough article (with diagrams) that explains alot about boarding a flight.
I liked the logical approaches of some, dissed the Spirit one (they force pax to check bags anyway--saving $2 is moot)
http://www.nytimes.com/2011/11/01/bu...oarding&st=cse
But, just seeing how trimming a few minutes boarding time on every flight for a large legacy carrier can save alot of $$ is fascinating.

