Elihu's Apologetic (Job 32:1-22)

Prior to Job 32 there have been a lot of words, speeches, and exchanges about suffering.  The speeches are frustrating because there is no resolution on the horizon.  The counselors and Job are finally finished with their bantering, but the book is not resolved.  Job is the last one to speak, but his words are not all that God glorifying.  Is there another man who can step up and offer some wisdom, offer some insight, or maybe a different perspective?  We meet Elihu.  Who is this man, and why has he been silent for so long?