“Sesame Street” (10 a.m., PBS): Talk about “Street” cred. After four

“Sesame Street” (10 a.m., PBS): Talk about “Street” cred. After four decades, “Sesame Street” still has it. The beloved children’s show kicks off its 40th season with an episode that features first lady Michelle Obama teaching residents about the benefits of healthful eating. Cameron Diaz also drops by, along with Big Bird, Elmo and our other pals.