For all the silly people who claim they need their optical drives to watch movies:
Why?
If you're at home, at a desk, then the external drive won't be a bother to you.
And if you're traveling / on the road / somewhere else, you're better of just copying the movies to your hdd.
The optical drive is loud, sensitive to movement, and uses a ton of battery. I don't see why anyone uses it except when absolutely necessary.