OK, let's face it. They key piece to the whole Christian ball of wax is the resurrection. Without that there is no church, no molested alter boys, no Notre Dame football! So I can rant all I want about the virgin appearing on a grilled cheese sandwich but really it all comes down to the resurrection. Without that Jesus was just a good public speaker and others would come after him and all would have been forgotten. But, the aledged resurrection makes the whole religion machine work.
Here's an interesting site that goes into great detail PROVING that the resurection really happend. It's well written in it's own way by Josh McDowell and I've not got enough biblical nor historical knowledge to challenge this document outright but would like to comment on one paragraph.
Supernatural power. To me here is the weak link. You have to believe that there is such a thing as the supernatural in the first place to accept this argument. If Jesus rose bodily into heaven, not ghostly Jesus but the flesh and blood guy, then where did he go? Moreover, how does supernatural power work? If it is a real thing and the author of the site is claiming it is a real thing, then it must have a mechanism by which it works. As usual the theist wants it both ways. He wants magic in the world but wants it to be real as well. You can't have it both ways.
Additionaly I found this site: Why I Don't Buy the Resurrection by Richard Carrier which point by point nicely refutes each of McDowell's claims. Be warned if you go to the two sites I've linked to, both these guys are VERY wordy! Good stuff though for a rainy afternoon.
And another thing. . . The story is that God sacrificed his only son so that he (the son) could die for our sins. But Jesus didn't die. He got up 3 days later so how much of a sacrifice is this? Again, everybody wants it both ways. Jesus died for us. . . but he didn't die! Can't have both!