Originally Posted by Qui-Gon Glenn
A Christian is a follower of Christ, regardless how a Church defines it... really, quite regardless of how the Bible defines it, as Christ came well before that book and had nothing to do with writing it.
The main source for Christ and his teachings are written down in the Bible. If you're going to separate the two and disregard the Bible, then what's left? What can possibly be said about Christ and his teachings that has independently from the Bible been mentioned in other sources? In my opinion (with a limited knowledge on the matter, I admit), the teachings of Jesus cannot be separated from the Bible.
Straying from the specific rules of Christianity doesn't make you more Christian than, let's say, a Buddhist. For example, the Golden Rule (basically "do to others what you would want them to do to you") could by some be seen as the essence of Christ's teachings. However, the Golden Rule can be applied to a dozen or more religions.