I was asked about some problem solving I had to do at a previous internship and I talked about how setjmp/longjmp saved my skin once. The interviewer seemed more pleased in the fact that I was excited about the solution than the fact that I had one.
Unlike you, I found it refreshing. I got the impression that they cared more about passion than obscure technical answers. In the end, I took another offer instead but it was a difficult decision to make.