We're sure you'll know him as a documentary making daredevil willing to put his pasty British behind on the line in the name of a good story. But we'll bet you don't know everything about our favourite film-maker.
1 - Quintessentially British?
Louis Theroux's on-screen persona as a polite, foppish and slightly bumbling chap with terribly good manners and slightly floppy hair couldn't be much more English if it came with a side of fish and chips wrapped in The Sun. You might be interested to learn then that he was actually born in Singapore, thanks to his travel writer dad Paul's day job.
2 - Oh say can you see...
As if the thought of a young Louis being born anywhere other than a leafy British town isn't enough of a mind-bender there's another surprise – our Louis has dual US/UK citizenship as his writer dad is a fully-fledged Yank. So don't be fooled by his little-boy lost act when he's in the US of A – he's not a fish out of water at all.
3 - Wibbling rivalry
It's not just his old man whose shadow Louis has had to climb out of - his brother Marcel and cousin Justin are no slouches either. While Marcel went down the family trade route penning a novel, Justin makes his living treading the boards, or the sets at least, as a movie actor. Can no one in this family just get a real job?
4 - Old school tie
Clawing back a little of his proper English gent reputation, Louis was a boarder at the exclusive Westminster School. It wasn't all robes, Latin and lock-downs though; Louis became pals with future comedy double act Adam & Joe. We'd pay good money to see one of Louis' docs re-enacted with Star Wars figures, in typical Adam & Joe fashion.
5 - No one likes a smart-alec
But sadly Louis definitely is one. Having survived boarding school Louis went to Magdalen, Oxford where he got a first in his History degree. We'd like to think he spent his years in the City of Dreaming Spires trying to get his dons to confess to making their lectures up using York Notes but we bet he was a goody two-shoes.
6 - Moore Moore Moore
It's been pointed out that Louis' willingness to go after awkward customers bears a resemblance to American food-enthusiast Michael Moore. Well, it's no coincidence – Louis' big TV break came on Moore's TV Nation where his darling English accent and readiness to go face-to-face with the Ku Klux Klan made him a sure-fire hit.
7 - Nip/Tuck
Louis' always put himself in the line of fire, whether getting up close and personal with the sub-set of swinging sex people, asking Ann Widdecombe if she still had her v-plates, or going starkers to pose for a pornographer. But the biggest sacrifice he's made so far came in plastic surgery doc when his love handles and paunch died in the name of journalistic integrity. God speed, little guys.
8 - Spooked... to the Max
There was always going to come a time when Louis came up against another shrewd operator, and his nemesis came in the form of controversial publicist Max Clifford. Louis soon found himself on the receiving end of a dirty tricks campaign, being papped outside Spearmint Rhino and set up to look like a dirty beggar in the red tops.
9 - Christmas shocking
Whilst Louis' wide-eyed approach doesn't always go down well (Jimmy fixed it for him to be called a 'piranha'), but Neil and Christine Hamilton certainly took to him. Whether it was his claim to be a 'friend not a journalist' or the drunken flirtation by Christine which made our skin crawl into another time zone something about Louis' time at Casa Hamilton got him on their actual Christmas card list, where he remains to date.
10 - The importance of being Idler
Louis doesn't just make a living in front of the camera – he's a regular contributor to The Idler, a kind of life-style magazine which promotes laziness. Hardly sounds like hard-grafting, that. Even more unusual is his contribution to Hip-Hop Connection magazine: if there's one thing we can't imagine Louis doing it's getting his freak on.