Smart Guy is an American sitcom centering on the exploits of child genius T.J. Henderson (Tahj Mowry), who moves from being an elementary school student in the fourth grade to a high school student in the tenth grade, attending the same school as his two elder siblings Yvette and Marcus. Created by Danny Kallis, the series ran for three seasons on The WB from April 2, 1997 to May 16, 1999. The series was produced by de Passe Entertainment and Danny Kallis Productions, in association with Walt Disney Television. Plot Set in Washington, D.C., the show centers on the misadventures of boy genius and youngest child T.J. Henderson (Tahj Mowry), who at the age of 10 moves from elementary school and gets transferred to Piedmont High School, where he ends up becoming a high school sophomore with teenagers as his classmates. He must adjust to the life with older but not necessarily wiser high school teenagers – including his brother Marcus (Jason Weaver) and Marcus's best friend Mo (Omar Gooding). Episodes typically deal with T.J.'s missteps of trying to fit in as a kid genius, while being a small kid in high school, as well as the contrast between his smarts and his brother's underachieving nature.