Firstoff, the movie isn't anti-semitic, unless you call being true to the "historical" record of the gospels anti-semitic. The passage in Matthew where the Jewish rabble answers to Pilate (reluctant to kill Jesus) that "his blood be on us, and on our children" isn't in the film, where it could easily have been.
For the record, Hitler himself wasn't the biggest fan of Jesus:
"Christianity is a rebellion against natural law, a protest against nature. Taken to its logical extreme, Christianity would mean the systematic cultivation of the human failure."
Nor is it sadomasochistic - there's not a hint of eroticism in the torture scenes (then again, I had my eyes closed during the scourging, what a pussy). This is a cheaper shot than the expected "anti-semitism" claims. No human being could enjoy the way Gibson treats it.
Granted, it's graphic and brutal as hell (and you do wonder about Gibson) - but so were most methods of punishment in history. You walk out of the film wondering if the price we paid for those amazing Roman aquaducts was this monstrosity.
It is strangely self-aggrandizing. What sort of man produces a movie just to play Jesus? Gibson has a major complex there. He also seems to really, really despise the human race. The ugliness of human beings is captured perfectly. Interestingly, he doesn't really develop Jesus as a character - he spends more time with Pilate. Which I liked - Pilate has always been the most sympathetic character in the Bible for me.
SwedishFish:
I, too, was struck by the historical inaccuracies but you can't blame Gibson for all of them - the gospels contradict each other. Which I found interesting - Gibson has Judas hang himself, as the Gospel of Matthew suggests. Acts, however, claims that he purchased a plot of land (medieval tradition has it a potter's field) with his 30 shekels and rather, er, exploded in the middle of it.
They do. In the Gospels, they resist and one Roman soldier has his ear cut off. Jesus heals his ear and goes with the soldiers.
The serpant thing was interesting.
What I found interesting was also that Gibson adheres to the error of having Jesus crucified spikes through hands. You can't crucify a person spikes through hands, you crucify them spikes through wrists. Or, it is more likely that the Romans would simply bind them to the cross. Whatever way, it's more merciful to crucify spikes through wrists - the blood loss would have hastened death, instead of leaving the victim to die of asphyxiation.
As for the wording of the sign, it all depends on which gospel you choose to adhere to.