How does Lou Holtz have a career?

It's Saturday and I'm watching "College Game Day," which brings to mind the same question I have every week:  Why is Lou Holtz on TV?  How did he succed as a coach?  How does anyone take him seriously?  Why is he on ESPN?  I don't understand. Every time I hear him talk I think it's a joke.  But it's not.  The man can't speak, yet somehow he's a professional sports commentator on television.  And before that he was the coach of Notre Dame.  How did his players not just laugh at him all the time?  It makes no sense.

If Lou Holtz can be a television football commentator I should be able to review TV commercials for a living.  It's only fair.