I contacted Greg after submitting my application to Berkeley Haas and decided to use his interview prep services after receiving the interview invite.
During the session I realized I was not very well prepared for the actually interview, but Greg gave me very thorough and detailed feedback after the mock, and helped me prepare better for the interview questions. He pointed out what were my problems when answering the questions, what I had to focus on during the interview, how I had to structure the answers, what topics I had to focus on. He also gave me tips about how I had to behave during the interview and what qualities I had to emphasize about myself.
I was admitted to Haas! I am confident that Greg's very detailed help with interview prep played a critical part in my success.