Jason Alexander is an American actor, comedian, and director, best known for his role as George Costanza on the popular television series Seinfeld. Born on September 23, 1959, in Newark, New Jersey, he began his career in theater before transitioning to television and film. In addition to his work on Seinfeld, Alexander has appeared in various movies and TV shows, including Pretty Woman and DuckTales the Movie: Treasure of the Lost Lamp. He is also a talented voice actor and has lent his voice to characters in animated series and films, showcasing his versatility in the entertainment industry.