Did you know that these lines weren’t in the original script? For this list, WatchMojo UK counts down the best, most memorable and most genius improvised moments from the "Harry Potter" film franchise. Featuring Harry himself, Ron Weasley, Hermione Granger, Draco Malfoy and He Who Must Not Be Named (Voldemort)... these moments might not have been planned, but they were perfect!

Check out these other brilliantly British videos from WMUK:
Top 10 Actors Who Turned Down Harry Potter -    • Top 10 Actors Who Turned Down Harry P...  
Top 10 Harry Potter Battles -    • Top 10 Harry Potter Battles  

Check out "Harry Potter" here!
   / harrypotter  

Have Your Idea Become A Video!
https://wmojo.com/suggest

Subscribe for more great content!
https://wmojo.com/watchmojouk-subscribe

WatchMojo UK’s ten thousand videos on Top 10 lists, Origins, Biographies, Tips, How To’s, Reviews, Commentary and more on Pop Culture, Celebrity, Movies, Music, TV, Film, Video Games, Politics, News, Comics, Superheroes. Your trusted authority on ranking Pop Culture.

#HarryPotter #WizardingWorld #Improv

Have Your Idea Become A Video!
https://wmojo.com/suggest

Subscribe for more Brilliantly British Content:
https://wmojo.com/watchmojouk-subscribe

WatchMojo UK is your source for British Top 10s, covering popular shows like Doctor Who, Strictly Come Dancing, Great British Bake Off, Coronation Street, The Morning, Good Morning Britain, The Graham Norton Show, Sherlock, and more! We also cover the latest in British Movies, Music and Pop Culture - We Top 10 it all!