I First explained about the algorithm I developed in image processing for video frame rate up-conversion. The technical interviewer tested my knowledge on video compression standards and he was quite impressed about it. Then I was asked to write a C test and I said I developed all of my algorithms in MATLAB for the past two years and did not have any exposure to C in the past five years (I indicated that in my resume). It turned off the hiring manager right away and I didn't get the job!