[talmand]

Previous knowledge of FizzBuzz doesn't necessarily indicate competency. They could have easily just read a blog about "The 10 Most Common Programming Interview Tests" and memorized a popular, simple way of creating the code.

To be honest, I seriously doubt the knowledge of FizzBuzz will be a common thing. I was seriously coding for a year or so before I had ever heard of it. When I first saw the question I had what I felt was a responsible block of code that worked. Since then I've tweaked it to be more efficient as my skill level increased. But I've never been asked in an interview to code FizzBuzz or anything like it.