Stand to Reason   http://www.str.org 

Stand to Reason trains Christians to think more clearly about their faith and to make an even-handed, incisive, yet gracious defense for classical Christianity and classical Christian values in the public square. Greg Koukl does a great job; one of the best sites out there.

Answers in Genesis  http://www.answersingenesis.org

“Answers in Genesis” is an apologetic ministry website dedicated to enabling Christians to defend their faith, and to proclaim the gospel of Jesus Christ effectively. Hen Hamm its founder focuses on providing answers to questions surrounding the book of Genesis, as it is the most-attacked book of the Bible. They desire to train believers to develop a Biblical worldview, and seek to expose the bankruptcy of old earth evolutionary teaching.

Ravi Zacharias Ministries. rzim.org

Ravi Zacharias International Ministries is a global team of itinerant speakers with impact throughout the world.
Focus on evangelism with a particular eye on skeptics, cultural influencers and critical thinkers. Focus on apologetics that addresses current issues and the intellectual struggles related to these concerns, and the humanitarian needs of those at risk within a society

The Way of the Master  www.wayofthemaster.com 

Kirk Cameron and Ray Comfort discuss with both Christians and non-Christians how we can come to know and appreciate the God of the Bible. Using simple and creative approaches, with interview and easy to understand illustrations they lead everyone to a clearer and more vibrate understanding and appreciation of God’s plan in providing His Son Jesus Christ. Highly recommended.

Learn 2 Discern - www.coralridge.org