Had a phone interview for an unrelated position that ended up being filled by a local candidate. However, my interviewer was impressed and added his recommendation to my profile. I was then contacted some time later about another position I had applied for, and in short order was scheduled for an in-person interview (skipped the phone interview this time). Got flown out to HQ and interviewed individually with several engineers and the manager over about 5 hours. Was given a short tour of the facility at the conclusion. Received a call the next day while waiting for a connection flight home with a job offer.

Broad-ranging questions about PERL, semiconductor physics, transistors, and behavioral "stuff." Questions get harder until you fail, so they can see how you react to not knowing the answer.