Starting Thursday, FXX will air all 552 episodes of The Simpsons in the longest single-series marathon in TV history. AP hide caption

itoggle caption AP

Syfy's Wizard Wars is a reality series featuring a new team of magicians each week, who are challenged to transform random props into magical illusions. Dale Berman/Syfy/Syfy hide caption

itoggle caption Dale Berman/Syfy/Syfy

David Suchet plays Hercule Poirot in Agatha Christie's Poirot. The last season premiers Aug. 25 on Acorn TV. /Courtesy of Acorn TV/ITV hide caption

itoggle caption /Courtesy of Acorn TV/ITV