Shrek/Fridge

Fridge Horror

Shrek has a pretty good one. In the beginning of the movie, the 3 bears (Papa, Mama, and Baby) are arrested by Farquaad's men. In the middle of the movie, you can see a bear skin rug with a pink bow on its head on the floor of Farquaad's bedroom. At the end, when all the fairy tale characters are freed and dancing, only Papa Bear and Baby Bear are seen. That means that Mama Bear has been killed and skinned.
- There's another one. Near the end of the movie, Farquaad is eaten by Dragon when Shrek and Donkey crash the wedding between Farquaad and Fiona. Fast forward to the dance party mentioned above: Farquaad is singing "Staying Alive" while inside Dragon's stomach. He's never seen in the movies after that point, suggesting that he was digested alive.
  - Either that, or that's his ghost in there, as featured in the spinoff theme-park attraction.

Fridge Brilliance

Why did the Dragon fall for Donkey? Because most of the people she had met had tried to cut her down with a sword...who she of course killed. Instead of trying to hurt her, Dragon instead tried acting firendly towards her to make sure she doesn't consume him...he didn't know at the time that she was a girl (and whoever put the princess in the tower probably wasn't concerned with the gender of the dragon, so long as the reptile got results), but she still appreciated what he did for her nonetheless.
In Shrek 2, when the Fairy Godmother first sees Fiona (in her ogre form) she seems startled but not terribly shocked at her appearance and then proceeds to sing about how she's going to improve Fiona's life by changing her appearance and plying her with material objects. Then when she finds out that Fiona married Shrek, she's shocked and horrified and quickly takes off. Since she probably hadn't yet heard from Prince Charming that he'd failed to get to Fiona in time and she'd married someone else, she probably thought Fiona had married Prince Charming and they simply weren't each others' true loves so the curse still held her. No wonder she was trying so hard to make Fiona feel better: she probably thought Fiona was depressed about the spell not being broken and was trying to manipulate her into staying with Prince Charming!
In Shrek the Third, I always thought Puss and Donkey switching bodies seemed random. But I watched it last night, and the two held hands when they were transported by Merlin's spell. That's why only they switched.
Fiona's transformation. By day, one form, by night another. And when Shrek kisses her, she murmurs that she's "supposed to be beautiful," to which Shrek says she is beautiful. Think about it - a pretty human probably wouldn't turn an ogre's head, but Fiona as an ogress? Smoking hot by Shrek's standards! Plus, she's more comfortable in her skin as an ogress than she is a princess, and being comfortable with one's self is always a turn on.
- ...duh, that's the entire point of the ending.