The series premiered on August 11, 1991, as the second Nicktoon after "Doug" and preceding "The Ren & Stimpy Show". Production initially halted in 1993 after 65 episodes, with the last episode airing on May 22, 1994. From 1995 to 1996, the only new episodes broadcast were "A Rugrats Passover" and "A Rugrats Chanukah", two Jewish-themed episodes that received critical acclaim; during this time, well after the end of the show's production run, "Rugrats" began to receive a boost in ratings and popularity with constant reruns on Nickelodeon. In 1996, Klasky Csupo Animation began producing new episodes, and the show's fourth season began airing in 1997. As a result of the show's popularity, a series of theatrical films were released; "," which introduced Kimi, Kira, and Fifi, released in 2000, and the final episode aired on August 1, 2004, bringing the series to a total of 172 episodes and 9 seasons during a 13-year run.