"Extreme Miami Hotspots" (7 p.m., Travel): Highlighting a fairy-tale hotel for adults, an underwater cemetery, and the largest Cuban sandwich in town. I shudder to think what Chicago's largest sandwich is.
"The Conscience of Nhem En" (7 p.m., HBO2): Brace yourself for photographs of the men, women and children doomed by Khmer Rouge atrocities in this Oscar-nominated documentary.
"The Real World: Cancun" (9 p.m., MTV): Girl-on-girl action alert.
"Top Chef Masters" (9 p.m., Bravo): Neil Patrick Harris, who can do no wrong, guests. Also: The chefs have to cook an egg with one hand tied behind their backs.
"Ascent of Money" (9 p.m., WTTW-Channel 11): Let's get nostalgic about the days when we had some. This is the start of PBS's documentary about coins evolving into credit, treasury bonds and hedge funds.