13. The Han Solo/Star Wars Line (Advanced Warfare)
On the brilliant Manhunt mission (the one where you get control of the drone-like Wasp), you have fairly free reign to fly around the map and pursue the mission objective. However, if you manoeuvre around towards Gideon and fire a round off against the enemy soldier he's talking to in the van, he'll remark "Boring conversation anyway"; the line Harrison Ford improvised in the first Star Wars: A New Hope from 1977.