High Quality Content by WIKIPEDIA articles! Conan is a late-night talk show airing each Monday through Thursday on TBS in the United States. The hour-long show premiered on November 8, 2010, and is hosted by writer, comedian and performer Conan O`Brien. The program`s host previously starred on NBC`s Late Night with Conan O`Brien for 16 years, then presented The Tonight Show for seven months until Jay Leno`s return to his version of The Tonight Show due to the 2010 Tonight Show conflict.