14:47 - C-3PO: "We're doomed." He also says this twice in A New Hope [3:04, 16:02], once in The Empire Strikes Back [1:00:38], and once in Return of the Jedi [10:03].
15:32 - Palpatine: "I've got a bad feeling about this."
16:31 - Anakin: "Here's where the fun begins." Han Solo says this in A New Hope [56:26], and Anakin has a similar line in Revenge of the Sith: "This is where the fun begins" [3:48].