He is most noted for his feature films Danny in the Sky,[1] Amnesia: The James Brighton Enigma (Amnésie, l'énigme James Brighton)[2] and A Paradise Too Far (Y’est où le paradis?).
[3] Denis Langlois received a diploma from the Concordia University film program.
In 1994, with Bertrand Lachance, he founded a company called Castor & Pollux Productions.
[4] It also got the best feature film public's prize in the Cine Llamale H of Montevideo in Uruguay in 2008.
It is also a semi-finalist for the Inclusivity Prize at Wayward Festival in Los Angeles 2018.