Louis Theroux has written, produced, and directed numerous documentary series and films over his career. He is best known for his participatory documentary style, where he fully immerses himself in the subjects and situations. Some of his most notable works include his contributions to the TV series TV Nation in the 1990s, the series Weird Weekends which explored unusual communities across three seasons, and individual documentaries such as When Louis Met... and Louis and the Nazis where he interacted directly with his subjects.