DEBATE: Who is the greatest player of all time?

The debate rages. In the wake of that man Messi's recent form, people are starting to reevaluate their views of the worlds greatest ever to grace a pitch. Now, it is important to bear in mind that yes, Messi would probably be better than Maradona and Pele if they were Messi's age today. But, in their own eras, who is the greatest ever to play the game? Post your comments below!