Prophetic evangelism is a great way to speak out what God is saying, and releasing the Kingdom into the lives of people. Steve Sjogren interviewing Doug Addison about the ministry of prophetic evangelism. A great interview. Also check out www.propheticevangelism.com for more information.
Also there is power evangelism, where people by the power of the Spirit receive words of knowledge and minister in miracles and healing. Todd White is one such individual who ministers and releases the Kingdom of God in this way. Here are some videos that demonstrate how individual empowered by the Holy Spirit will effect and affect change.
What is really important to grasp here is this is all happening outside the four walls of what you would call church. The Kingdom of God is being released on the streets of our cities by people who are taking the message of the Gospel and the Kingdom where the hurting people are. House churches can become agents of the Kingdom of God by equipping the people to be agents of grace releasing the supernatural Kingdom of God.