John Sullivan wrote an interesting list of "Leading-edge Candidate Screening, Interviewing, and Assessment Practices". Our top 3:
Gamification — Assessment or self-assessment using games on the corporate website — USAF.
Virtual reality simulation — Use a job-simulation tool to assess either college students or professionals — KPMG.
and of course: Crowdsourced references — Use a candidate’s network to assess their background using 360° type reference surveys (i.e. Checkster) — Growing usage.
Full article here.