Martin Luther King Day; Michael Bloomberg, 2020 Democratic presidential candidate; Today Style; Today Food with Elizabeth Chubbuck; educator Mauri Friestleben; writer Marta Kauffman ("Friends" and "Grace and Frankie"); Make Ahead Monday; actor Jerry O'Connell ("Carter", "Ballbuster", and "The Secret: Dare to Dream"); sportscaster Rick Wolffe; financial expert Sharon Epperson;—anonymous