Red Hat Linux Air:
You purchase your ticket for a TINY fee(only to cover what it costs to print the ticket itself), or you can optionally print the ticket with your own printer and pay nothing. when you get to the airport, you board your plane and recieve a small toolkit and a book of instructions on how to assemble your fully adjustable, incredibly comfortable seat. once you have done that you relax and enjoy the most perfect take-off, flight and landing there is. all anybody says is "you have to do WHAT do your seat???"