The opening line to A.N is aided by by the song by the Doors- The End and the ceiling fan. You take those elements away and the opening intro doesnt have the same impact.

I would have to say the opening line to Vanilla Sky is very good. Some hate this movie , some love it. Nolan said he was influenced by it when writing Inception.

Open your eyes. Open your eyes. Open your eyes. Open your eyes. Open you...

[David wakes up and pushes the snooze button on his alarm]

The opening line and who is saying it is very important.