In 2008 I replied to a Thomson (now Thomson Reuters) job add that I might be interested.
A 45 min. or so phone call was agreed on, where I was asked general questions
about my Ph.D. research, technical experience, model design and programming skills.
A few days later I was flewn in for a two-day on site meeting. I was hosted in a very nice 4 **** hotel (Embassy Suites). The interviews were all-day and ranged from straight forward probability theory to high level software design and NLP/IR/ML topics with a whole range of super-nice people (I spoke with people at 5 different hierarchy levels) that later became my colleagues, and in the evenings we went to excellent (by U.S. standards) restaurants.
I liked that the interviewers were not at all arrogant, and many of the questions were asked out of genuine interest rather than being silly logic puzzles. And the better the interviewers were in mathematics, the goofier was their sense of humor, so I had a feeling this might be the right place for me ;-).
After these two steps, I was made an offer that I accepted without negotiation, and I didn't regret it. Stayed for 10 years and made it to research director; when I left, I donated my karaoke kit from BestBuy to remind the team of the fund we had together. Thanks, guys, you rock (if you read HN)!