Who is the best player ever?

Fischer is so far given that he learned himself with little help and destroyed well everyone single handed.

best player is lionel messi

Carlsen, Fischer, Petrosian, Tal, Spassky, Capablanca, Alekhine Kasparov, Anand, Lasker, Morphy. The list goes on and on. All extremely good and better than extreme good. It is a tough one to debate since technology has helped players along and so has studies. Morphy was so good in his time he was even better than Fischer for the most part (compairing times not strength head to head).

In my personal opinion the top 3 in no specific order include:
Fischer, Kaspaorv and Carlsen.

Oh and how could I forget Botvinnik and Karpov.

computer analysis of world chess champions, facing the question with an engine : )
http://en.chessbase.com/news/2006/world_champions2006.pdf

Morphy rules. All others drool.

It is Magnus Carlsen, my personal idol!

Of course it would be Unihedron. Come on guys.

M Tal. Exciting, no the best, by exciting.