TIL To promote his new movie Lost in Space (1998), Matt LeBlanc appeared on three different talk shows (Live with Regis & Kathie Lee, The Rosie O'Donnell Show, and Late Night with Conan O'Brien), which all aired on the same day.
https://www.itsabouttv.com/2017/04/whats-on-tv-tuesday-april-7-1998.html
