Sheldon Lee Cooper Ph.D., Sc.D., is a fictional character in the television series The Big Bang Theory and its spinoff series Young Sheldon. The "Fun with Flags" show within a show was sparked when Sheldon told Penny a fun fact about the flags of Haiti and Liechtenstein. In Fun with Flags, he explores the dynamic world of vexillology, the study of flags.

Gwen Stefani talks about her Christmas album, You Make It Feel Like Christmas, and how Blake Shelton's adjusting to life as People's Sexiest Man Alive.