I think you got your "Star Wars" and "Chronicles of Narnia" movies confused.
The Rancor and General Grievous weren't in Star Wars: Episode I - The Phantom Menace.
The dragon wasn't in The Chronicles of Narnia: The Lion, the Witch, and the Wardrobe. It didn't appear until The Chronicles of Narnia: The Voyage of the Dawn Treader.
Other than those, and possible the "giant spider" in The Mist (which I don't remember seeing), this was a good list!
The Rancor and General Grievous weren't in Star Wars: Episode I - The Phantom Menace.
The dragon wasn't in The Chronicles of Narnia: The Lion, the Witch, and the Wardrobe. It didn't appear until The Chronicles of Narnia: The Voyage of the Dawn Treader.
Other than those, and possible the "giant spider" in The Mist (which I don't remember seeing), this was a good list!