Longtime DCist readers know we love a good documentary. We’re particularly interested in a triple header WETA has lined up for tomorrow examining Hurricane Katrina and what lessons it left behind.

The evening starts at 8 p.m. with the premiere of a NOVA on Hurricane Katrina titled “The Storm that Drowned a City“, examining the science behind the hurricane and how it caused so much destruction in New Orleans. Then at 9 p.m. is the premiere of a new FRONTLINE documentary on the political storm following the disasters, where Martin Smith and his fellow producers promise to ask “hard questions about the decisions leading up to the disaster and beyond.” (We snagged this photo from their site.) Lastly, WETA pulled an American Experience documentary from the vaults — a film about the Mississippi River flood of 1927 called Fatal Flood, and seductively subtitled “A story of greed, power, and race.” The catastrophic 1927 flood decimated many poor farming communities and killed as many as 1,000 people.

Ok, ok. We know that 3 hours of serious television may be a bit much for the average viewer. But at this point serious filmmakers and journalists have had just about enough time to dig deep into the Katrina disaster, and we’re looking forward hearing what they have to say. Let us know what you think if you watch.