Harry Potter and the Deathly Hallows, part 2
directed by David Yates
The scene: Forget "Braveheart", "Milk", "Titanic" or whatever movie that makes you cry. Look no further - this will reduce you to pathetic bucket of tears. In a sequence, that with all honesty may be the most powerful and certainly is the saddest I've ever seen, we see the memories of Severus Snape. In the twist we find out that he was a great hero and he loved Harry Potter's mother Lily, even after she chose James Potter over him and may have never loved Snape in return. Beginning with "Dumbledore's Farewell" playing in the background we see Snape's reaction to finding Lily Evans's dead body. To avenge her death he was a spy for Dumbledore after her demise. After the reveal made by Dumbledore - that Harry needs to die in order to defeat Voldemort, Snape is shocked at Dumbledore's cruelty - keeping the boy in the dark for so many years. Dumbledore asks if after all those years Snape now cares for the boy - in the response Snape conjures his patronus - a doe, identical to Lily's patronus and looks at it with sadness and absolute reverence. Dumbledore, astonished, asks Severus if he loved Lily all those years, after all this time, to which, after we see a quick glimpse of crying Snape holding Lily's lifeless body, Snape responds "Always".