"In TV, and in particular in commercials, you don't really need to explain very much at all - you just say he's a spy and he's a little bit theatrical and overblown and smug and he's not very good at his job"

Rowan Atkinson is suggesting that in tv, and particularly in commercials, you don't need to describe much. All you need to do is give a few details about a character and the audience will understand. In this case, he is describing a spy character who is theatrical, overblown, smug, and not great at his job. This is an excellent example of how a couple of easy information can produce a brilliant image in the minds of the audience. It also demonstrates how a few words can be utilized to create a memorable character. By using these couple of words, the audience can quickly understand the character and the message of the commercial. This quote is a great tip of the power of words and how they can be utilized to create a long lasting impression.