Interviews are one of the least valid selection mechanisms available to an employer, however, I wouldn't usually hire someone without one. Personality metrics, job samples, and references (not chosen by the applicant) will probably give you a more valid measure of whether the person is going to be a good fit for your organization. Of course, it would probably be best to have done a job analysis and created a job description before implementing such procedures.
Of course, a person could still always be a no-show on the first day.

Still, references may help you get a feel for the person's work ethic before offering the position.
"He's the electric horseman, you better back off!" - old sKool making a reference to the culturally relevant 1979 film.