Conan O'Brien was a late 20th/early 21st century comedian that had a television show that aired at night in the United States of America in the early 2000s.
In 2004, in Detroit, Loomis asked Lawrence Strode to come back to the blood bank to fill out some records, but Strode was apprehensive, citing that it was already 11:00 pm, and he was concerned that he might miss Conan. (ENT: "Carpenter Street")