I'm currently reading Graham Holliday's Eating Vietnam so now I have some very strong feelings about our next crawfish boil.

The Gulf Coast has a huge Vietnamese population dating back to the end of the Vietnam war. This video from the Southern Foodways Alliance documentary series explores the cuisines that came out of these combined traditions. Cajun and Vietnamese have some common themes: They're both spicy, both adore seafood, and French influence is strong throughout.