Who is the best cricket bowler in the world?

Top of the ICC rankings for bowlers is currentyl South African seam bowler Dale Steyn for test matches and New Zealand spin bowler Daniel Vettori for One Day Internationals

England spin bowler Graeme Swann appears highest in both test (2nd) and ODI's (4th) which suggests he is currently the best bowler in the world across all formats of the game.