Mentioning Christians is not the same as mentioning Christ. There's only one example here of someone who was a contemporary of Jesus and that's Josephus. Only one problem. There's an arab translation of this writing that says something different from what this does. Seems an overzealous Christian did a little tweaking.
At this time there was a wise man who was called Jesus. And his conduct was good, and he was known to be virtuous. And many people from among the Jews and the other nations became his disciples. Pilate condemned him to be crucified and to die. And those who had become his disciples did not abandon his discipleship. They reported that he had appeared to themafter his crucifixion and that he was alive; accordingly, he was perhaps the Messiah concerning whom the prophets have recounted wonders.
It is impossible that this passage is entirely genuine. It is highly unlikely that Josephus, a believing Jew working under Romans, would have written, "He was the Messiah." This would make him suspect of treason, but nowhere else is there an indication that he was a Christian. Indeed, in Wars of the Jews, Josephus declares that Vespasian fulfilled the messianic oracles. Furthermore, Origen, writing about a century before Eusebius, says twice that Josephus "did not believe in Jesus as the Christ."
http://www.earlychristianwritings.com/testimonium.html
http://ccat.sas.upenn.edu/~humm/Topics/JewishJesus/josephus.html
That leaves the Talmud which doesn't exactly support the Bible. But in my mind it's the strongest support for Jesus having actually lived.