I <3 The Wizard of Oz.
The books, the 1939 film, the 1985 unofficial sequel (which I wrote my dissertation on at University), the artwork, the various theatre productions and spinoffs, the songs and the ideas behind the story.
Everything about The Wizard of Oz makes me happy. That's just the way it is.
"If I ever go looking for my heart's desire again, I won't look any further than my own backyard; because if it isn't there, I never really lost it to begin with."
Learn some Wizard of Oz history (click here)
71 Facts About The Wizard of Oz in The Guardian, 2010. (Click Here)
25 Various Styles of The Wizard of Oz Illustrations. (Click Here)
Pretty Spot On Article About Return to Oz & It's Freakiness. (Click Here)
Ok, so how about this - think of something (a film, a book, a video game, a piece of music...) that makes you happy and re-watch/read/play it. Or look up all the trivia that exists about it. Or spin offs/artwork/sequels/prequels/rip-offs. Nothing wrong with a bit of gorging yourself on something you love.