Had a resume drop off at my college campus, got emailed 2 days later that I had an interview at the conference center in the airport, a day later I was notified that I had advanced to their onsite interview in Chicago with all expense paid. The onsite interview was very laid back and somewhat informal, it was basically just talking with current employees to see if you are a good cultural fit with the company. The interview process was extremely rapid, but everyone I came into contact with was helpful and genuine.

this was a screening interview. It was taken over the phone. It lasted about thirty minutes. This was after my interviewer had to reschedule me. She was pretty tough to talk to, and it didn't seem like she wanted to be interviewing at all. She was even kind of snarky. Not a pleasant interview experience.