"Jumping Jacks" is an okay time killer. It has a few laughs and a few smiles but nothing very memorable. I enjoy Jerry Lewis (I saw him perform at Westbury (NY) Music Fair when he was ninety years old. It was a fun show.) and Dean Martin. But I enjoy them separately. As team, at least in their movies, they also fall flat with me. "Jumping Jacks" is better than their other movies but that's not saying much. "Jumping Jacks" has a good story and the supporting cast is likeable. It does have some funny moments but from some reason the movie started to feel long. And then it felt even longer. It should have been fifteen minutes shorter.