The animated television series Rugrats has been noted for its portrayal of Judaism, a dynamic rarely portrayed in American animated programming during the series' broadcast run (1991–2004). Two episodes of the series are devoted to Jewish holidays and explaining their history, and the Pickles family is shown to be part-Jewish. The first Rugrats Jewish holiday special was suggested to the production staff in 1992 by Nickelodeon executives as a special devoted to Hanukkah. Germain instead refashioned it into a Passover episode and the series did not explore a Hanukkah special until 1996. Critical reaction to Jewish themes in Rugrats was largely positive. Each holiday special achieved high viewing numbers according to Nielsen Media Research and received positive reviews. However, Jewish character Grandpa Boris' portrayal in a 1998 Rugrats comic strip was criticized by the Anti-Defamation League for apparent antisemitism.