Willy Wonka and the Chocolate Factory (1971)

The first filmed version of Roald Dahl's famous book is the only one you really need to see. The screenplay was written by the author himself. I know that alone doesn't guarantee success, but thankfully everything else in the production came up as polished and golden as the tickets that grant the five young protagonists access to the secret world of Willy Wonka.
Wilder plays the chocolatier like a ringmaster with an enigmatic but caustic edge lurking beneath his multifaceted surface – he's a candy box of moods.
Wonka's the guide but it's Charlie Bucket who the audience are more in tune with. Charlie is poor in pocket but rich in heart. He recognises moments of self-pity when they appear but half the time is powerless to quash them completely. He'd be bullied in real life, but in Dahl's world he's a shining light of redemption that provides both the warmth of a kind heart and the selfless sadness that is often tethered to the same emotional machine.

4 disappearing rabbits out of 5