My worst dream from childhood was like this.
I was laying on some grass on a hill in a brightly colored landscape, with a generic playskool-esque house resting behind me at the crest of the hill. I look up at the sun, it smiles at be, rotating about 45 degrees to the right, then the left, in a sort of hypnotic pattern. Seconds later, the sky begins to darken slowly, then faster, then it is black. As the sky begins to darken, the sun's expression changes from happy, to manic, to demonic, as it grows fangs, an snout exends from it's center, it's eyes glow red, and it transforms almost completely. At the very end of the dream, the sun has transformed into the floating head of a chiuahua with a fiery mane, rotating in the same pattern, coming closer and closer, faster and faster, it's jaws opening wide and wider, until finally, it unleashes an earth shattering howl and consumes me. Before I am pierced by it's mighty fangs, I awaken, unable to sleep until the next evening, possibly the following evening. I kid you not, this dream has plagued me since I was about...four, I think. I had it most recently near the end of my fourteenth year.