Santa's Little Helper and Tiger (50th). According to a writer for McClatchy News Service, the rankings were "determined by popularity, name recognition and how long the show lasted." Among fans and critics, Santa's Little Helper has been mostly well received. He ranked seventh in a 2008 poll by "Dog Whisperer"s Cesar Millan that determined the "best-loved television dog of all time." Lassie ranked first in the poll. In addition, he was voted the tenth favorite "Simpsons" character by readers of "Simpsons Comics" in the United Kingdom in 2010. In a list of their top twelve favorite dogs from cartoons, comics, and animation, writers
The Simpsons show. The celebration ended on January 10, 2010 (almost 20 years after "Bart the Genius" aired on January 14, 1990), with "The Simpsons 20th Anniversary Special – In 3-D! On Ice!", a documentary special by documentary filmmaker Morgan Spurlock that examines the "cultural phenomenon of "The Simpsons"". As of the twenty-first season (2009–2010), "The Simpsons" became the longest-running American scripted primetime television series, having surpassed "Gunsmoke". On April 29, 2018, "The Simpsons" also surpassed "Gunsmoke"s 635-episode count with the episode "Forgive and Regret." "The Simpsons" has won dozens of awards since it debuted as a series, including 31 Primetime Emmy