<Table> <Tr> <Th_colspan="2"> The Simpsons </Th> </Tr> <Tr> <Td_colspan="2"> The Simpson family . From left to right: Bart, Marge, Santa's Little Helper (dog), Maggie, Homer, Lisa, and Snowball II (cat). </Td> </Tr> <Tr> <Th> Genre </Th> <Td> Animated sitcom </Td> </Tr> <Tr> <Th> Created by </Th> <Td> Matt Groening </Td> </Tr> <Tr> <Th> Based on </Th> <Td> "The Simpsons" shorts by Matt Groening </Td> </Tr> <Tr> <Th> Developed by </Th> <Td> <Ul> <Li> James L. Brooks </Li> <Li> Matt Groening </Li> <Li> Sam Simon </Li> </Ul> </Td> </Tr> <Tr> <Th> Voices of </Th> <Td> <Ul> <Li> Dan Castellaneta </Li> <Li> Julie Kavner </Li> <Li> Nancy Cartwright </Li> <Li> Yeardley Smith </Li> <Li> Hank Azaria </Li> <Li> Harry Shearer </Li> <Li> (Complete list) </Li> </Ul> </Td> </Tr> <Tr> <Th> Theme music composer </Th> <Td> Danny Elfman </Td> </Tr> <Tr> <Th> Opening theme </Th> <Td> "The Simpsons Theme" </Td> </Tr> <Tr> <Th> Composer (s) </Th> <Td> Richard Gibbs (1989--90) Arthur B. Rubinstein (1990) Ray Colcord (1990: "Dead Putting Society)" Alf Clausen (1990--2017) Bleeding Fingers Music (2017--present) </Td> </Tr> <Tr> <Th> Country of origin </Th> <Td> United States </Td> </Tr> <Tr> <Th> Original language (s) </Th> <Td> English </Td> </Tr> <Tr> <Th> No. of seasons </Th> <Td> 29 </Td> </Tr> <Tr> <Th> No. of episodes </Th> <Td> 639 (list of episodes) </Td> </Tr> <Tr> <Th_colspan="2"> Production </Th> </Tr> <Tr> <Th> Executive producer (s) </Th> <Td> List of exec . producers (show) <Ul> <Li> James L. Brooks </Li> <Li> Matt Groening (both; entire run) </Li> <Li> Al Jean (1992--1993, 1995--1998; 1999--present) </Li> <Li> John Frink (2009--present) </Li> <Li> Matt Selman (2005--present) </Li> <Li> Sam Simon (1989--1993) </Li> <Li> Mike Reiss (1992--1993) </Li> <Li> David Mirkin (1993--1995) </Li> <Li> Josh Weinstein (1995--1997) </Li> <Li> Bill Oakley (1995--1997) </Li> <Li> Mike Scully (1997--2001) </Li> <Li> George Meyer (1999--2001) </Li> <Li> Tim Long (2005--08) </Li> <Li> Ian Maxtone - Graham (2005--2012) </Li> </Ul> </Td> </Tr> <Tr> <Th> Running time </Th> <Td> 21--24 minutes </Td> </Tr> <Tr> <Th> Production company (s) </Th> <Td> Gracie Films (1989--present) 20th Century Fox Television Klasky Csupo (1989--1992) Film Roman (1992--2016) Fox Television Animation (2016--present) The Curiosity Company (2015--present, uncredited) AKOM Rough Draft Studios </Td> </Tr> <Tr> <Th> Distributor </Th> <Td> 20th Television </Td> </Tr> <Tr> <Th_colspan="2"> Release </Th> </Tr> <Tr> <Th> Original network </Th> <Td> Fox </Td> </Tr> <Tr> <Th> Picture format </Th> <Td> 480i / 576i (4: 3 SDTV) (1989--2009) 720p (16: 9 HDTV) (2009--present) </Td> </Tr> <Tr> <Th> Audio format </Th> <Td> Stereo (1989--1991) Dolby Surround 2.0 (1991--2009) Dolby Digital 5.1 (DVD, broadcast 2009--present) </Td> </Tr> <Tr> <Th> Original release </Th> <Td> December 17, 1989 (1989 - 12 - 17)--present </Td> </Tr> <Tr> <Th_colspan="2"> Chronology </Th> </Tr> <Tr> <Th> Preceded by </Th> <Td> The Simpsons shorts from The Tracey Ullman Show </Td> </Tr> <Tr> <Th_colspan="2"> External links </Th> </Tr> <Tr> <Td_colspan="2"> Official website </Td> </Tr> </Table> <Tr> <Th_colspan="2"> The Simpsons </Th> </Tr>

Who long has the simpsons been on tv