Gene Wilder, who regularly stole the show in comedic gems such as “The Producers,” “Blazing Saddles,” “Young Frankenstein,” “Willie Wonka and the Chocolate Factory” and “Stir Crazy,” died Monday at his home in Stamford, Conn. His nephew Jordan Walker-Pearlman said he died of complications from Alzheimer’s disease. He was 83. He had been diagnosed with non-Hodgkin’s lymphoma in 1989.