Re: "...They also think their Rebbe is going to rise again. (Ala Jesus)..."
With all due respect, Dawntreader, the Lubavitch concept is the correct one, and it is the Jewish concept which was adapted by those which eventually became known as Christians; not the other way around.
Also, there is at least one Jewish Prophet in the "Tanach" raising the dead back to life, exactly as is attributed to Jesus in the "New Testament" regarding another Jew named Lazarus.
The very ideas of Moshiach, Resurrection of the Dead, Judgement Day, "The End Times", "a New Heaven and New Earth", a "New Jerusalem", etc... are completely Jewish theological innovations.
The actual sad fact, is that the vast majority of Jews worldwide, have no idea what Judaism actually teaches in Torah. I myself was one of those I refer to, until just recently when I took it upon myself to read Torah in depth from cover to cover, and then seek out the answers to the most perplexing passages I encountered.
As to whether or not the Lubavitch Rebbe is Moshiach, I can't comment; having never met him. He was and is spoken of with the highest superlatives by all of his peers who mastered Torah and Jewish Law throughout the world. I do hope and pray that Moshiach arrives soon and sets the world straight!