greater works: part I

It's difficult to know where to start with criticisms of the "signs and wonders" movement as it is sometimes called.  I'm hoping to compare and contrast some criticisms from within and without the "charismatic movement" (as that has been called), along the way as I make some observations about the  

Do you not believe that I am in the Father, and the Father in Me? The words that I speak to you I do not speak on My own authority; but the Father who dwells in Me does the works. Believe Me that I am in the Father and the Father in Me, or else believe Me for the sake of the works themselves. Most assuredly, I say to you, he who believes in Me, the works that I do he will do also; and greater works than these he will do, because I go to My Father.

http://letusreason.org/Biblexp107.htm

You can do the greater work by learning the gospel and learning how to explain and stand down the arguments against it. The gospel message is the power of God to salvation which, Jesus taught as the most important (Rom. 1:16; 1 Cor. 1:18; 2 Tim.1:8; 1 Pt.1:5)- once it is understood by those hearing the message it becomes a motivation to exercise ones will to call upon the Lord to save them from their sin.