Jesus Christ
The name Jesus is simply the name "Joshua" translated first into Greek, then English. The name Jesus almost always refers specifically to Jesus of Nazareth, accepted by Christians as the Son of God. The life of Jesus is recorded in the Bible in the Gospels of Matthew, Mark, Luke, and John. As recounted in the Gospels, Jesus raised Lazarus from the dead and was subsequently crucified for His work and teachings. Jesus voluntarily accepted this fate and delivered over His spirit on the cross for our sins. Three days later He rose from the dead and appeared to others.
The first time John saw Jesus, he said, "Behold the Lamb of God, who takes away the sins of the world!" [1]
Other people in the Bible named "Jesus"
The author of Ecclesiastius, a book which Catholics include in the Douay Bible, but Protestants place in the Apocrypha, is known as Jesus of Sira.
The Historical Jesus
Occasionally someone denies the existence of Jesus, but few scholars take this seriously. Tacitus, the Roman historian, wrote about Jesus in A.D. 115[2], and Josephus, a Jewish historian who did not believe in Jesus' divinity, wrote about Him. [3].
Many of the descriptions in the Gospels have been proven true with modern archeology. Skeptics challenged the existence of Pontius Pilate, for example, about whom there is almost no historical evidence outside of the Gospels. But in 1961, the only known inscription of Pontius Pilate was discovered, confirming his existence.[4]
Lee Strobel's book The Case for Christ contains a number of interviews with experts on the historical Jesus, and is a good resource on this subject.
Christ's Second Coming
On Saturday, March 24th, 2006, a small note appeared on Wikipedia.org's Second Coming article, wherein 21-year old jobless drifter Christopher Hopkins offered an argument for Christ's Return. Initially deleted out of Wikipedian skepticism stemming from fear, doubt, and insufficient disprovability, Christopher's meme propagated across the internet as the first step in a fulfilled Messianic prophecy. MySpace.com, Wikipedia.org, and SomethingAwful.com served as the initial battlefronts in the War for Peace, previously referred to as the last judgment.
As of Sunday, April 1st, 2007, Wikipedia.org refuses to even allow discussion of the meme, claiming that any argument for Jesus Christ's return was "ridiculous neoconservative propaganda" and a "hoax."