Why can't we make the earth shake?

Luke tells in Acts chapter 4 the story of Peter & John and their first encounters with the Sadducees. To shorten the story, Peter explains to the council their questioning of his healing of the crippled man by what power it took place: "... he was healed by the Powerful Name of Jesus Christ the Nazarene, the man you crucified but whom God raised from the dead. For Jesus is the one referred to in the Scriptures, where it says,

"The stone that you builders rejected has now become the cornerstone." (Psalm 118:22)

There is salvation in no one else! God has given no other name in heaven by which we must be saved."

After a few more minutes of deliberation amongst the council members, they decided to let Peter & John go because "they did not know how to punish them without starting a riot."
(verse 21) But they did tell them not to teach about Jesus any more.

Peter & John returned to the temple where the people were and told them what had been said and done. So the people prayed a powerful prayer for courage. And powerful it was: "After this prayer, the meeting place shook, and they were all filled with the Holy Spirit. Then they preached the Word of God with boldness."

I don't know about you, but I wish that I could know what its like to pray with such faith & fervor that God would send the Holy Spirit down in such hugeness that the place where I am would shake! These people didn't just ask God to help them preach well; they asked Him to do miraculous signs in Jesus' name! Luke goes on to explain that they were all united in heart & mind. If we, as believers, pray together in one heart & mind, I believe that we will see miracles and we will make the earth beneath our feet "shake."