Which of these television shows makes everyone look under their chair?

The television show that makes everyone look under their chair is Oprah. This is because Oprah Winfrey, the host of the show, was famously known for her surprise giveaways, where she would randomly select audience members and surprise them with expensive gifts or experiences. As a result, whenever Oprah said, "Look under your chair," everyone would eagerly search underneath, hoping to find a special surprise or gift. This phrase became iconic and synonymous with Oprah's show, making it the answer to the question.