* PlayingAgainstType:
** Creator/HumphreyBogart is famous for playing hard-boiled, cynic, cool characters. Here, he plays the awkward, withdrawn workaholic Linus.
** Cynical Creator/BillyWilder seems like a surprising choice for the director/producer/co-writer of a modern (by fifties standards) fairy tale.
* ScienceMarchesOn: When Sabrina tells the Baron that wanting David to love her feels as difficult as reaching for the moon, he tells her that people have started building rockets to reach the moon.