I'm always nervous when I see a screen adaptation of a book I love which stems primarily from a fear of them getting my fave characters wrong. But when they get them right it makes the whole movie or show even better!
So I recently asked the BuzzFeed community for the times that a film or TV adaptation perfectly nailed a character from the book. Here are the best responses:
1. Jonathan Bailey as Anthony – Bridgerton

Here's Anthony and Kate's romantic story:
View this video on YouTube
2. Kristen Stewart as Bella – Twilight

Watch Kristen as Bella here:
View this video on YouTube
3. Aaliyah as Akasha – Queen of The Damned

Watch the moment Akasha arrives:
View this video on YouTube
4. Sam Heughan as Jamie Fraser – Outlander

Here are five minutes of Sam being Jamie:
View this video on YouTube
5. Henry Cavill as Geralt – The Witcher

Watch Henry encompassing Geralt's dry humour:
View this video on YouTube
6. Maggie Smith as Professor McGonagall – Harry Potter

Watch some of Mcgonagall's best bits:
View this video on YouTube
7. Julianne Moore as President Alma Coin – The Hunger Games: Mockingjay

Watch Julianne in action here:
View this video on YouTube
8. Gwendoline Christie as Brienne of Tarth – Game of Thrones

Here's Brienne being a badass:
View this video on YouTube
9. Viggo Mortensen as Aragorn – The Lord of the Rings

Watch the best of Aragorn here:
View this video on YouTube
10. Leonardo DiCaprio as Frank Wheeler – Revolutionary Road

Here's Leo being Frank:
View this video on YouTube
11. Matt Damon as Mark Watney – The Martian

Here's Matt as Mark putting some laughter into tense moments:
View this video on YouTube
12. Robbie Coltrane as Hagrid – Harry Potter

Watch the best of Hagrid:
View this video on YouTube
13. Tom Sturridge as Dream – The Sandman

Here's Tom as Dream:
View this video on YouTube
14. Jenny Walser as Tori Spring – Heartstopper

Here's Tori's best bits:
View this video on YouTube
15. Tom Felton as Draco Malfoy – Harry Potter

Watch some of Malfoy's best moments:
View this video on YouTube
16. The main cast – Shadow And Bone

Watch the Crows in Shadow and Bone:
View this video on YouTube
17. Andre the Giant as Fezzik – The Princess Bride

Watch some of Fezzik here:
View this video on YouTube
18. Emilia Clarke as Louisa Clark – Me Before You

Check out Louisa's best moments here:
View this video on YouTube
19. Ian McKellan as Gandalf – The Lord of the Rings

Here are some of his best scenes:
View this video on YouTube
20. Gregory Peck as Atticus Finch – To Kill a Mockingbird

Watch Atticus' closing argument:
View this video on YouTube
21. Ruth Wilson as Mrs. Coulter and James McAvoy as Lord Asriel – His Dark Materials

Here's the scene the two of the reunited:
View this video on YouTube
22. Storm Reid as Meg Murray – A Wrinkle in Time

Here's Storm as Meg:
View this video on YouTube
23. Jennifer Ehle as Elizabeth Bennet and Colin Firth as Mr. Darcy – Pride and Prejudice

Here's the two of them in Pride and Prejudice:
View this video on YouTube
24. Neil Patrick Harris as Count Olaf – A Series of Unfortunate Events

Here's his first scene:
View this video on YouTube
25. The main cast – Troy

Here's a clip from the director's cut:
View this video on YouTube
26. Nite Owl and Rorschach – Watchmen (film)

You can see them in Watchmen here:
View this video on YouTube
27. Noomi Rapace as Lisbeth Salander – The Girl With the Dragon Tattoo

Here's Noomi as Lisbeth:
View this video on YouTube
28. The main cast – Fried Green Tomatoes

Watch Idgie and Ruth from Fried Green Tomatoes here:
View this video on YouTube
Editor's note: Some of these submissions have been edited for length or clarity.