Martin Freeman: Bilbo
[Smaug takes off to attack Lake Town]
Bilbo Baggins : What have we done?
Bilbo Baggins : I did not come to steal from you, O Smaug the Unassessably Wealthy. I merely wanted to gaze upon your magnificence, to see if you really were as great as the old tales say. I did not believe them.
Smaug : [strikes a pose] And do you, NOW?
Bilbo Baggins : Truly, tales and songs fall utterly short of your enormity, O Smaug the Stupendous...
Smaug : Do you think flattery will keep you alive?
Bilbo Baggins : No, no...
Smaug : No, indeed!
Gandalf : You've changed, Bilbo Baggins. You're not the same Hobbit as the one who left the Shire...
Bilbo Baggins : I was going to tell you... I found something in the Goblin tunnels.
Gandalf : Found what? What did you find?
Bilbo Baggins : [pause]
Bilbo Baggins : My courage.
Gandalf : Good... well, that's good. You'll need it.
Smaug : You think you can deceive me, Barrel-Rider? You have come from Lake Town! This is some sort of scheme hatched between these filthy dwarves and those miserable tub-trading Lakemen, those snivelling cowards with their Longbows and Black Arrows! Perhaps it is time I paid them a visit!
Bilbo Baggins : Oh, no... This isn't their fault! Wait! You can not go to Lake Town!
Smaug : You care about them, do you? Good! Then you can watch them DIE!
Smaug : You seem familiar with my name, but I don't remember smelling your kind before. Who are you and where do you come from, may I ask?
Bilbo Baggins : I come from under the hill...
Smaug : Underhill?
Bilbo Baggins : ...and under hills and over hills my paths lead. And through the air! I am he who walks unseen!
Smaug : Impressive. What else do you claim to be?
[leans forward to smell Bilbo]
Bilbo Baggins : L-Luck-Wearer... R-Riddle-Maker...
Smaug : Lovely titles... Go on.
Bilbo Baggins : Barrel-Rider!
Smaug : Barrels! Now that is interesting!
Smaug : It's Oakenshield. That filthy Dwarvish usurper! He sent you in here for the Arkenstone, didn't he?
Bilbo Baggins : No no no no no, I have no idea what you're talking about...
Smaug : Don't bother denying it! I guessed his foul purpose some time ago! But it matters not. Oakenshield's quest will fail. A darkness is coming. It will spread to every corner of the land!
[gutting an infant spider that touched his ring]
Bilbo Baggins : MINE!
[slowly realizes what he has done]
Smaug : And what about your little dwarf friends? Where are they hiding?
Bilbo Baggins : Dwarves... No. No dwarves here. You've got that all wrong.
Smaug : Oh, I don't think so, Barrel-Rider! They sent you in here to do their dirty work, while they skulk about outside!
Bilbo Baggins : Truly, you are mistaken, O Smaug Chiefest and Greatest of All Calamities...
Smaug : You have nice manners for a thief, and a LIAR! I know the smell and taste of dwarves, no one better!
[Bilbo stabs a spider, who screams of it stinging]
Bilbo Baggins : Sting... That's a good name!
Thorin Oakenshield : [after putting in the key and opening the door] Erebor.
Balin : [In tears] Thorin.
Thorin Oakenshield : I know these walls. These halls. This stone. Do you remember it Balin? Chambers filled with golden light.
Balin : I remember.
Gloin : [Reading the Dwarvish writing in the stone] Herein lies the 7th kingdom of Durin's folk. May the heart of the mountain unite all dwarves in defense of this home.
Balin : The throne of the king.
Bilbo Baggins : [Observing the carving] And what's that, above it?
Balin : The arkenstone.
Bilbo Baggins : And what's that?
Thorin Oakenshield : That, Master Burglar, is why you are here.
Smaug : [searching for the invisible Bilbo; menacingly] Well... Thief! I can smell you... I can hear your breath, I can feel your breath... Where-Are-You?
[comes really close to Bilbo, who begins to lose his nerve]
Smaug : Where are you?
[Out of fright, Bilbo takes off running. Smaug chases after him. Bilbo hides behind one of the columns]
Smaug : [calmly] Come now... Don't be shy. Step into the light.
[creeps towards Bilbo's hiding place]
Smaug : There is something you carry... Something made of gold. Except only much... more... Precious...
[Bilbo is assaulted by Sauron's eye and quickly takes the ring off. He sees Smaug's piercing eye in front of him. Bilbo gasps, startled]
Smaug : There you are... thief in the shadows.
Bilbo Baggins : I-I didn't come to steal, Smaug the inaccessibly wealthy. I only wanted to gaze upon your magnificence, and what the old tales say is true.
Bilbo Baggins : But I did not believe them!
[Smaug fluidly slinks away and does a pose of grandiose]
Smaug : [proudly; his voice resonating] And DO YOU NOW?
Bilbo Baggins : [in awe] Yes... Yes, what the stories said is true.
Bilbo Baggins : [whispering] Everyone, climb into the barrels! Quickly!
Dwalin : Are you mad? They'll find us!
Bilbo Baggins : No, no they won't, I promise you. Please, please, you must trust me.
Thorin Oakenshield : Do as he says.
[They do so, and Bilbo does a head count]
Bofur : [pokes his head out] What do we do now?
[All the dwarves poke their heads out]
Bilbo Baggins : Hold your breath.
Bofur : Hold me breath? What do you mean...?
[All the dwarves yell as Bilbo pulls the lever opening the trap door, spilling the barrels into the river]