The suffering servant in Isaiah 53 is Israel.
Which did he say?  My God, My God, why have you forsaken me(Mark)? or Father into your hands I commit my spirit(Luke)? It is finished(John)?
Did he carry the cross the whole way? Yes(John)?  No, he was helped(Matthew, Mark, Luke)
What did the sign on the cross say? Jesus of Nazareth, King of the Jews(John)? This is Jesus, King of the Jews(Matthew)?  The King of the Jews(Mark)? This is the King of the Jews(Luke)?
Who discovered the empty tomb? Mary Magdalene, Joanna, Mary the mother of James and some other peeps found two dudes there that told them he was gone(Luke)? Mary Magdalene, the "other" Mary find one dude there and see the tomb is empty(Matthew)?  Mary Magdalene, Mary the mother of James and Salome meet one dude at the tomb(Luke)?  Or was it just Mary Magdalene and one dude(John)?
These and other fairly large discrepancies about what is, really, the central mythology of the church make it hard for me to swallow.  Based on what I've read, JC seemed like a pretty righteous dude, and he could always be counted on the bring some good stuff to the party, but he was the idea man.  Without Paul to "tweak" his message (I think of Paul as the first Billy Mays) then I doubt that the religion would have grown the way it did.  
If JC were to come back today I think he would drop some srs 'bows  on 99.9% of the churches out there.