Anthony Lemke, who plays Three, went through elementary and high school in French under immersion programs in his native Canada and is fluent in Canadian French.
Three wears a Canadian-style knitted cap, known as a toque, while he is singing in French with the android, alluding to the fact that actors Anthony Lemke and Zoie Palmer are Canadian. Three even speaks French with a French Canadian accent.
The french song sung by Three and the Android is "Dominique", written and originally performed by Jeanne Deckers, aka The Singing Nun.
This episode's title, "All the Time In the World", is spoken by the Android when she discusses the possibility of teaching French to Three.
This episode is very similar to an episode Joseph Mallozzi wrote for the show Stargate SG-1 (1997) called Window of Opportunity (2000) in which two characters are stuck in a time loop and must convince the other characters.