With the all-important November sweeps only a week away, CBS and NBC “reward” viewers with repeats. “ER” (9 p.m., NBC) offers powerful episode from last November starring Ray Liotta. Shot in real time, “ER” follows a single patient, Charlie Metcalf (Liotta) a hardened alcoholic ex-convict who shows up in the waiting room complaining of pains and delusions and ends up surrounded by a medical team fighting to save his life.

Along the way, Metcalf slips into hallucinations and dreams that fill out the details of his broken life, showing us how he hit the bottle and the skids after a single traumatic event. Liotta won the 2005 Emmy for Outstanding Guest Actor in a drama series for his performance.

Tonight’s other highlights

¢ Members of the Nakum tribe visit with the rival Yaxha team on “Survivor: Guatemala” (7 p.m., CBS). Some players fear that a friendly visit may result in future collaboration. And some viewers fear for the future when these ridiculous tribe names show up on their Scrabble boards.

¢ Court TV celebrates Halloween early as “The Investigators” (9 p.m., Court) presents a documentary about a real-life mystery set in New Orleans’ French Quarter. Homicide detectives find clues that indicate a possible killer is obsessed with the cult 1970s film “The Rocky Horror Picture Show,” and indicate that he or she may be into performance art with a sinister bent.

¢ Filmmaker Michael Tucker spent two months with an American artillery unit in Iraq to complete the film “Gunner Palace” (7 p.m., Military Channel). The soldiers have commandeered the shattered ruins of Uday Hussein’s mansion and have nicknamed their new home Gunner Palace. The film captures the men during raids on suspected terrorists, dealing with roadside bombs, enduring mortar attacks and other unseen dangers. “Palace” also spends time with the soldiers during quiet times swimming in Hussein’s pool and even taking turns on his putting green.

¢ The Chicago White Sox and Houston Astros meet in Game Five of the World Series (7 p.m., Fox). If the game is not required Fox will broadcast the 2002 romantic fantasy “Maid in Manhattan” (7 p.m., Fox), starring Jennifer Lopez and Ralph Fiennes.