2: Pep Guardiola's Barcelona | 2008/11
Introducing the tiki-taka style that is now synonymous with the club, Guardiola taking over Barcelona was possibly the greatest decision the club have ever made concerning the management.
The truth is that until last year the Catalans were untouchable in almost every game they played. In every single position they boasted a world-class player and with Lionel Messi they can claim to have possibly the greatest footballer to have ever lived.
Trumping the free-spending Real Madrid to the La Liga title in 2008/09, 2009/10 and 2010/11, Barca also won the Champions League twice in this period and are widely considered to be one of the most capable teams ever assembled.