The late Jerry Stiller's character, Frank Costanza, was an integral part of Seinfeld. Stiller and Michael Richards' characters, Frank and Kramer, had some of the show's best moments. Despite their bold personalities and style of acting, they worked well together. Stiller respected Richards' work ethic, and Richards adored working with Stiller. They were allowed to do things on set that other actors were not, and their scenes were a free-for-all. The two had real love for each other, which was evident in their performances.
