The above YouTube video is by Sye Ten Bruggencate and is called "Apologetics is easy - Believe your Bible. Sye hammers the evidentialist approach big time and shows why it is unbiblical to focus on giving evidence to unbelievers who foolishly deny God's existence. He shows how we can effectively share our faith in a biblical way by exposing the foolishness of the professed unbelievers worldview.
Over the last few months I've been having my eyes opened to the importance of Presuppositional Apologetics and how to use it in evangelism. It brings together things I've learned about the Law and about the role of evidence. Presuppositional is relating to the beliefs that people presuppose, and apologetics is giving a clear and reasoned explanation for why Christianity is true.
Here's a summary of Sye Ten Bruggencate's approach. http://trueforms.wordpress.com/2013/06/12/summary-of-sye-ten-bruggencates-apologetic/.
Another really great video that is on the same kind of topic is Ultimate Proof by Jason Lisle.