Katie Couric was on The Late Show last night, and besides talking about Walter Cronkite and the Gates/Crowley controversy (free beer at the White House tomorrow! Woo-hoo!), they debated on the proper pronunciation of the word "preternaturally." Katie says it's "pre" with a long "e" and Dave disagrees.

Katie actually spells it wrong in the segment, but thankfully it's a word that 98% of the population will never have to use.