@izzythepush,
I am suggesting, as so many have over the centuries, that it is an interpolation. Someone added to the original text. There are several good arguments for this. One is the glaring error of calling Pilate a procurator. Prior to the appointment of a procurator as governor, procurator was the title of a fiscal officer--a sort of accountant and inspector general appointed separately from the governor, and answerable to the Senate. (The Wikipedia article on procurator was edited on February 25th, 2013.) According to Livius-dot-org, no procurator was appointed as a governor until the reign of Claudius in 53 CE.
The use of the term christian is an anachronism, something else Tacitus would have know as his imperial appointment was in Asia Minor, where christianity had begun to take hold. Origen, one of the most important early church writers and the man who selected what became the accepted gospel canon, does not mention this passage in Tacitus, which would have been an important passage to any christian apologist. More than that, he states that Josephus did not believe that Jesus was the messiah, which flatly contradicts the accounts since the time of Eusebius.
All of this becomes important because the question is not whether or not there was a self-styled rabbi called Yeshuah in the first century, but of whether or not there was a Jesus as modern people know him. The name Jesus does not appear before the 6th century.
This joker who has been doing the hatchet job at Wikipedia is stating the the alleged passage in Tacitus and the alleged passage in Josephus are two of the three important confirmations for an historical Jesus. The other he lists is the letter of Trajan to Pliny. This is really playing fast and loose with the truth. Pliny wrote to Trajan in the second decade of the second century to ask what to do about christians. Nowhere does his letter state that there was a Jesus, just that christians had told him that they meet together to worship their Christ as a god. Trajan writes back and basically recommends a "don't ask, don't tell" policy to Pliny.
You can read the Pliny-Trajan correspondence on this topic at this page from Georgetown University. Some joker is having a field day at Wikipedia.