I think I would have to say that it would take a hell of a lot more than what you showed to offend me. None of those pictures came even close. And, like TYWD, I thought the "last supper" pic was rather clever.
What really does offend me, though, is how much people around the world seem to want to bend over backwards to avoid offending those who have proven to be offensive to almost everyone. Yes, in this instance I am speaking of those radical members of Islam who have no compunction against ridiculing other countries, other flags, other religions, but who will immediately beat their breasts in pained outrage if you reciprocate.
So portraying Muhammad with a bomb for a turban was offensive to them? Tough shit! Seeing people dancing in the streets because thousands of people died in the WTC was just as offensive to me! Do caricatures of your religious leaders make you mad? Too bad! Bombs going off in buses makes me pretty pissed off, too. Don't like people criticizing your religion? Stop sentencing rape victims to harsher penalties than their rapists!
The Bible and the Koran, I believe, are in agreement here: Ye shall reap what ye shall sow.