While I disagree with his Christology (Burke is a Christadelphian, so is a "Biblical Unitarian" [Humantarian/Socinian Christology]), Dave Burke has a good presentation on the Historical Jesus, including a good discussion of Christ-Mythicism:
Burke also had a good (and humorous) take-down of Earl Doherty, a Christ-Mythicist, what Dr. James F. McGrath quoted in a blog post entitled, "Doherty Mythicism" "proving" that Earl Doherty was not a historical person using the same "arguments" Doherty (and others such as David Fitzgerald) employ against the historicity of Jesus.