Sid the Science Kid (also known as Jim Henson's Sid the Science Kid) is an American half-hour CGI animated series that aired on PBS Kids from September 1, 2008, to March 25, 2013, with a total of 68 half-hour episodes produced over two seasons. The computer-generated show is produced by The Jim Henson Company and then-PBS member KCET in Los Angeles, California using the Henson Digital Puppetry Studio. The show is produced by motion capture which allows puppeteers to voice digitally animated characters in real time. Production began in the fall of 2008 with 42 half-hour episodes of Sid the Science Kid having been ordered. The series debuted on PBS Kids along with Martha Speaks on September 1, 2008, with a two-year on-air commitment. The original working title for the series was "What's the Big Idea?" and the central character, Sid, was originally named Josh.
- Drew Massey as Sid
- Julianne Buescher as May / Rose
- Victor Yerrid as Gerald / Mort
- Alice Dinnean-Vernon as Gabriela Cordova / Alice
- Donna Kimball as Susie / Zeke
- America Ferrera as Dr. Rosalinda Cordova