Original questions, not the usual off-the-shelf stuff. One interviewer even acknowledged that it made no sense for me to remember every obscure detail of a data structure, he was happy with me recognizing what the correct data structure for the task at hand was and explaining why Lots of problem solving: "we have this issue how would you tackle it?" questions, and the discussion was along the lines "I would do this" - "Do you know the performance implications? Complexity in time and space". I believe this was good: the interviewer was focusing on my skills as a programmer/designer of my own code rather than a walking algorithm reference book