A lot of people (including me, BTW) believe that Jesus survived the crucifixion and went on to minister to one of the lost tribes of Israel in Kashmir.
There is a lot of historical evidence of this, however it is all in Persia, India, and Tibet. Any hint of this history has been suppressed, buried (or erased) in the west from almost the beginning of the Christian movement...
I found an interesting take on this from India. (several other religions believe that Jesus did not die on the cross... and some have the documents to prove it)