When the contestants enter the arena for the third task, the Beauxbatons girls in the audience are dancing the Macarena. Yes, it's hard to believe, but here's the original music video for you to compare the dances. (Of course, the professional dancers in the video are a bit more slinky in their moves.) https://www.youtube.com/watch?v=XiBYM6g8Tck
19. Look! Two Tropical Fish!
Tonks hair is pink in the books, but purple in the films. This was a deliberate decision on the filmmakers part to keep her personality separate from that of Dolores Umbridge, who favors increasing shades of pink in her wardrobe. It probably wouldn't have mattered, since we never see the two in the same scene together.
18. Your What Hurts?
Malfoy, Crabbe and Goyle can all be seen attending Divination classes during Umbridge's inspections of Professor Trelawney, but they did not do so in the books. Even if they had, they wouldnt have done so with the Gryffindors, as Harry and Ron can be seen in a related scene. As far as we know, the only classes the two Houses share are Potions and Care of Magical Creatures.
17. I'll Have A Mocha Frappuccino, Please
A stylized version of the Starbucks logo can be seen in the Black family tapestry in The Order Of The Phoenix. We also see (for the first time in the films) that Sirius isnt the only member of the Black family to have an astronomical name: Regulus Arcturus (Sirius brother), Bellatrix and Andromeda (Tonks mother and sister to Bellatrix and Narcissa).