I bought complete interview guide for my interview preparation and I have seen all of the videos on interview tips by Don in youtube, they are incredible. I have been offered two jobs. To be honest, none of the interviewers asked me any of those questions, hardly one or two, but the guide gave me the right language to use, how to be precise and succinct in a very confident manner, when a question is asked.
When you are prepared for behavioral questions, it takes out the stress out of our mind on what to answer when asked and makes us to focus on our answers.
The book was really incredible and definitely I will suggest it to my friends. Don is really doing a wonderful job by helping most of the candidates who are looking for the jobs. Keep going!