 The "Klow" restaurant to which Albert goes for dinner with Anna is a  tribute to the famous "bande dessinee" (comic book) hero Tintin. The  front window, the menu (including the meals syldavian names), the  waiter and the washrooms are all identical to their original version  in the book "Tintin et le sceptre dOttokar". The position of the  waiter listening through the door is the same as Tintins in the  original story. There is at least one other reference to Tintin in  the movie: Albert has a miniature replica of Tintins famous moon  rocket on his answering machine.