My fav interview was at my previous job. It was a junior position. The lead was a very friendly and wise guy. He kept pushing me (positively) with subtle hint until I get a code right. After completing each problem he give me elaborate explanation about the meaning of the problem and how to approach it from other angles. It felt like I'm in front of buddha who is making me realize the inner working of the world. Didn’t get 50% of the questions right, still he recruited me because "You were very curious and you were having fun solving problems". Best one and half years of my career.