Ask someone who sews about hooks and you will get a discourse on the different types, styles, strength and overall visibility. Ask someone who fishes about hooks and you will get a discourse that could go on for days. Ask a writer or reader about hooks and this is where the discourse moves from concrete to subjective. The conversation takes on a very personal flavour.
In the submission process, writers put out the hook and hope a publisher or an agent takes the bait. But like food and drink, the response varies according to taste. The writer may choose to go the e-book route and hook the readers directly. Again, it's a matter of taste. In these cases, there's no right or wrong hook just preferences.
So, as a reader or writer, what is your all time favourite hook? Why did it draw you into the story? What made you want to know more?