MBC Chicago has announced a new drama called "Mr. Baek" that will begin airing on January 14. A shorter one: 16 episodes, each 60 minutes long, airing Wednesday and Thursday evenings at 10:00 p.m. Story about a CEO in his 70s who suddenly finds himself physically transformed back to his 30s.
I've attached the PDF announcement that MBC Chicago released, and Wikipedia and AsianWiki links, all of which give more information about the plot and the cast.
From Dae Jang-geum: Sun-dol: "Are you trying to dry me up and kill me? Why do you say the same things over and over every day? Rather, come and hit me once! Aigu!" But then: Dr. Lazarus: "By Grabthar's hammer, by the suns of Warvan... You shall be avenged."