What sources outside of the Bible give supporting evidence to the existence of Jesus and any of the events in His life?
If you want to see some good youtube videos on the subject I can guide you to these links
I tried to get all those that Norman names. Just a problem with spelling those wholly foreign names. You can find all 19 of them in the video though.
It is curious to note that even Tacitus who was a rather big critic of the early church never thought that Jesus was a myth or never existed. When even Christianity's first century opposition talk about Jesus as a historical figure then it really becomes unreasonable to buy into this atheist rhetoric of him being a myth.
Josephus is the account is the most violently opposed because it gives such credence to Christianity. The atheist is left with the burden of proof of proving the text suspect. This again becomes unreasonable seeing as all the extant manuscripts of The Antiquities of the Jews says the same thing.
The Christian when confronted with these attacks need to ask the naysayer what is his / her evidence for these texts being suspect? This will probably get you the response of denial of the burden of proof or if the opponent is honest enough he / she will admit their is none.
A "Case for Christ" does address this question. Among others, Josephus and Pliny both make reference to early Christian practice. The Josephus material is suspect, or more so than Pliny, anyway. Note these are to the followers of Christ, not "see that guy over there named Jesus" type references. See http://en.wikipedia.org/wiki/Historicity_of_Jesus for a start.