This article reminds me of my interview for workstations at HPi. I came away from it knowing that I had to work there. The interview was 5 hours: 4 one hour sessions and lunch with the team. I didn't write a single line of code the whole day. Every question came with the disclaimer that the answer was less important than the thought process.

Disclaimer: I work there now and my opinions don't necessarily represent my employer's etc.