9. Paris When It Sizzles (1964)
I'll be the first to admit that Paris When It Sizzles is not a fantastic film - it's occasionally self-indulgent and over-the-top with its story-within-a-story structure. However, as it reunites Sabrina co-stars William Holden and Audrey Hepburn, it's impossible not to love the chemistry these two share. The film itself is frothy fun at its lightest - screenwriter Holden needs typist Hepburn's help writing a movie script in three days before Bastille Day (which would have been an equally awesome title for the film, by the way). There's plenty of tongue-in-cheek comedy and switching between the real lovers and their fictional counterparts in the script, and while it's vaguely similar to the awful Alex & Emma (2003), thankfully Paris When It Sizzles is miles above it, a sweet ditty of a film that sparks and, appropriately enough, sizzles with chemistry.