I just wanted to clarify my last post:
We are "being saved." When we come to know Christ and are "saved" it's not as if we are completely sanctified at that moment. It's a constant growing in grace, a growing in holiness. We are not perfect, but we are being made perfect.
SO...when I say that "Total Depravity, The Trinity, and Justification by faith alone" are essential for "salvation" I mean that they will come to be known as truth. The work of the Holy Spirit is not going to lead us to believe false doctrines, is He? So as we grow in grace, we should, when examining ourselves, come to understand and believe these doctrines.
Also, this is an awesome interview with Paul Washer and Kirk Cameron. Let me know what you think. Oh, and if you'd like to download any of his sermons, click here.
Kirk and Todd interviews Paul Washer