Barack ObamaThese are the yearbook photos of some very famous US politicians. Some look much the same as they do today, others are not even recognizable. In this case there is no distinction of party lines. More images after the break...Joe BidenNancy PelosiHillary ClintonJohn McCainSarah PalinMike HuckabeeGeorge W. BushGeorge H.W. BushBill ClintonJimmy CarterRod BlagojevichAl GoreDick CheneyRudy Giuliani