Carrie Preston, who plays Emily Linus (mother of Benjamin Linus), is the wife of Michael Emerson who plays the older Benjamin Linus.
The part of Jacob had not been cast at the time of his appearance in "The Man Behind the Curtain." He was played by a crew member and the voice was that of producer Carlton Cuse.
When rushing towards the highway for help, a sign is briefly shown behind Roger, saying: Portland 32 miles. When Richard Alpert was recruiting Juliet, he told her that the company he worked for was just outside of Portland.
Ben's Dharma Initiative jumpsuit is different from those worn by other characters. It doesn't have a Dharma logo on it and is a slightly lighter color.
In the process room Ben is given an Apollo chocolate bar, the same brand of chocolate bar found in the hatch.