There was a poll that stated—Rowling’s opening line in the HP series is one of best in the world. Someone posted about how there are a bunch of other opening statements that are better.
Here’s one of my personal favorites, from Gabriel Garcia Marquez (in English):
“It is inevitable — the scent of bitter almonds always reminded him of the fate of unrequited love.”
Come to think of it... even though #TheMuppetChristmasCarol doesn't exactly have an opening line, the first few sentences of actual narration are a strong start:
(Gonzo) "Hello! Welcome to The Muppet Christmas Carol! I am here to tell the story."
(Rizzo) "And I am here for the food."