Part of a new approach in the wake of Kotb's exit, Johansson is just one in a carousel of celebrities who will guest-host the show.Start the day smarter. Get all the news you need in your inbox each morning.

Jenna Bush Hager is saying goodbye to her partner in crime. On Jan. 10, Hoda Kotb will mark her final day on NBC's Today show, where she co-hosts the 7-9 a.m. hours with Savannah Guthrie and the 10 a.