The film starts off with a period of time that didn't originally exist in the book.
Jennifer Lawrence and Philip Seymour Hoffman had a ton of fun improvising together.
Not wanting to have a film without Effie Trinket, they replaced the character Fulvia in the book with Effie's character on film.
The actors shot inside an actual replica of the hovercraft to make the scene as realistic as possible.
The hospital scene was a turning point for Katniss, making her realize that she had what it took to be the Mockingjay.
Jennifer Lawrence and Woody Harrelson were pretty much always goofing around.
They got to destroy a real factory when they demolished District 12 on-screen.
One of the first scenes screenwriter Peter Craig pitched was showing how the other Districts were responding to the message of the Mockingjay.
The movie Das Boot inspired the way President Coin showed strength and courage during the bombing scene.
Check out the full audio commentary and more special bonus features when The Hunger Games: Mockingjay — Part 1 comes to Digital HD Feb. 17, and Blu-ray/DVD on March 6!