 Moreover, it has been used as a prominent story-enhancer in numerous episodes of "The West Wing", "The Bill", "House", "Ugly Betty", and "ER".The "Walk and Talk" technique is also often used as a way of combining exposition with a visual introduction to major areas (and their locations in relation to one another) that will be used in a production.Examples of this can be seen in both film (the opening conversation between Mal and Simon in "Serenity") and television (the similar conversation between Sinclair and Lyta in the pilot episode of "Babylon 5", "").