No offense to those who suggest it, but I have to say that the intent of bringing Jesus Christ back to life ought to be considered blasphemous. In the first place, He in Christian theology is alive, not dead, so bringing Him back to life is a meaningless idea. One of the critical points of His ministry, after all, is to defeat death and bring life to His people, showing in His own life on Earth that He could. In second place, or even first if you prefer, is that we should never let the idea we can instruct God cross our minds. He does not come because we summon Him, He comes at His own will. To presume to bring Him back to life would be to place ourselves above Him.
That off my chest, I'll wave a magic wand and bring back a very good dog of mine who died years ago. She'd be a great companion now.