This is NOT a popular drama although I heard it played a significant role in spreading the hallyu wave in the U.S. If you ignore Dennis Oh's below average acting skills, slow screenplay and sometimes boring scenes...this drama is sure to keep you interested. The story is ordinary but the execution was good. The scenes involving Choi Beum Gu and his gym cronies were so hilarious I'd often burst out laughing while watching alone. It's an earnest parody of a spy drama...it gets serious at times but it somehow manages to retain it's comic element. Nam Sang Mi's character was slightly annoying at times but then she made Lee Sun Ae seem genuine, innocent and honest. It is a good drama and somehow I've managed to develop a connection to it, hence I'm being generous and rating it at 8.