Willy Wonka & the Chocolate Factory (1971) from Warner Bros.

Directed by Mel Stuart. With Gene Wilder, Jack Albertson, Peter Ostrum, Roy Kinnear. Charlie receives a golden ticket to a factory, his sweet tooth wants going into the lushing candy, it turns out there's an adventure in everything.

I remember watching this twice a year every year at Hopkins. I miss those Rocky Horror-esque performances with massive amounts of candy. Throwing nerds across the room in the path of the projected light when Mike Teevee was sent in a million little pieces was so gratifying.
It’s been a few years since I watched this, but even the “Cheer up Charlie” song doesn’t grate on me like it once did. I used to think it was the worst part of the film and now it’s vaguely tolerable–still not great–but tolerable at least.
I had re-read the book last year and put a tracker on the film version. Netflix just added it to their mix last week, so it’s now available there for a while.
Watched on Netflix