Thanks Kelly.  Great point about interrupting.  That tendency is often a sign of impatience and the act of interrupting is an attempt to deal with being uncomfortable.  The "valid" excuse is that we were just "trying to move the conversation along".   The problem with just trying not to interrupt is that even if we resist the urge the speaker will feel our impatience.This is one I know all too well personally and have had to work really hard at changing.  What I have discovered is taking a slow deep breath is also a way that releases the internal tension of impatience.