Monica Geller based the six main characters on some of their own friends and family; Monica is based on Kauffman herself. Observing that each main character was originally written as a "one-note stereotype", Jonathan Bernstein of "The Daily Telegraph" identified Monica as the group's "uptight fun-killer". When "Friends" first aired, the majority of its earliest episodes revolved around Monica, via whom each character appears to be interconnected; "Friends" stars the character's brother, her best friend, her former roommate and her two neighbors socializing in Monica's apartment. In the pilot, Monica is dumped almost immediately after sleeping with her new date Paul on
Bruce Geller "All in Love" (1961), but his efforts met with only modest success. Geller left New York for Los Angeles, where he was employed writing scripts for episodes of several television series, including "Zane Grey Theater", "Have Gun, Will Travel", "The Rebel", and "The Rifleman". He also worked as the co-executive producer of the "Rawhide" series for the 1964-1965 television season. While producing "Rawhide", he developed the idea for a new "cloak-and-dagger" series, "". In 1966, Geller created, wrote, produced, and directed "Mission: Impossible", the accomplishment for which he is best remembered. The show ran on CBS from 1966 to 1973