Louis Theroux is best known for his documentaries in the television series "Louis Theroux's Weird Weekends" and "When Louis Met...".Louis Theroux is best known for his documentaries in the television series "Louis Theroux's Weird Weekends" and "When Louis Met...".Louis Theroux is best known for his documentaries in the television series "Louis Theroux's Weird Weekends" and "When Louis Met...".