15. Harry Potter and the Half-Blood Prince (2009)
The Deleted Scene: Professor Flitwick conducts the school choir as they sing a haunting rendition of In Noctem, clouds gathering over Hogwarts as Snape ponders the task that lies ahead…
If They Had Left It In: It would have hinted at Snape’s reluctance to kill Dumbledore, which happens shortly after. Too much of a giveaway for those unfamiliar with the books? Perhaps.
For more great deleted scenes, including shorn footage from Star Wars, The Dark Knight, Lord Of The Rings and Shaun Of The Dead, follow this link.