<Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2015) (Learn how and when to remove this template message) </Td> </Tr> <P> The following is a list of all The Adventures of Jimmy Neutron: Boy Genius episodes . The series is based on the 2001 film Jimmy Neutron: Boy Genius . </P> <Table> <Tr> <Th_colspan="2"> Season </Th> <Th_colspan="2"> Episodes </Th> <Th_colspan="2"> Originally aired </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> Pilots </Td> <Td_colspan="2"> </Td> <Td_colspan="1"> September 7, 1998 </Td> <Td> December 21, 2001 </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 20 </Td> <Td_colspan="1"> July 20, 2002 (2002 - 07 - 20) </Td> <Td> September 5, 2003 (2003 - 09 - 05) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 20 </Td> <Td_colspan="1"> September 19, 2003 (2003 - 09 - 19) </Td> <Td> July 9, 2004 (2004 - 07 - 09) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> Jimmy Timmy Power Hour </Td> <Td_colspan="2"> </Td> <Td_colspan="1"> May 7, 2004 </Td> <Td> July 21, 2006 </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 21 </Td> <Td_colspan="1"> November 11, 2004 (2004 - 11 - 11) </Td> <Td> November 25, 2006 (2006 - 11 - 25) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Season </Th> <Th_colspan="2"> Episodes </Th> <Th_colspan="2"> Originally aired </Th> </Tr>

How many seasons of jimmy neutron are there
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