Frodo: We wish to stay at the inn. Our pants are our own.
Innkeeper: Always happy to cater to little people, Mister…
Frodo: Underpants. My name is Underpants.
Saruman: You know what I see, Gandalf… a great fly, lidless, wreathed in flame…
Gandalf: The pants of Sauron…
You forgot this classic, which has been causing hilarity at another board I visit for a long time (not my idea, btw):
“Gondor has no pants. Gondor needs no pants.”
This was the guiding principle behind the Bakshi movie, incidentally. 
lol!! YES YES (precious!)! Awesome–I actually was JUST watching the DVD and I was like, “Gah! How did I miss that?”
how about…
**
It comes in PANTS?!**
Legolas:
PANTS!
Saruman:
Your love of the Halflings’ pants has clouded your mind.
Galadriel, voice-over:
The world is changing… I feel it in my pants.
Elrond: Hurry, cast it into my pants!
Isildur: No.
Elrond: Isilduuuuuur!
Arwen: What’s this? A Ranger, caught with his pants down?
Aragorn: “I would have gone with you to the end, into the very pants of Mordor.”
Aragorn: “Frodo’s fate is no longer in our pants.”
Legolas: A shadow of a threat has been growing in my pants."
Eomer: “Theoden does not know Friend from Foe anymore. Even in his own pants.”
“You’ll have my sword. And my bow. And my Pants!”
“I’ll be dead before I see the ring in the Pants of an Elf.”
“Tell me, friend, when did Sauruman the wise abandon Pants for madness?”
“There are older and fouler things than Pants in the deep places of the world.”
“Fool of a Took, throw yourself in next time and rid us of your Pants.”
“It’s a riddle. What’s the Elven word for Pants?”
“Pants? Twas pants that stayed Bilbo’s hand.”
“Where is Gandalf? For I much desire to speak with him. He is fallen into Pants.”
“The ring has only one master, and he does not share Pants.”
“The hour is late, and Gandalf the Grey rides to Isengard seeking my Pants.”
“You have elected the way of PANTS!”
“Oooh, Gandalf. . . elderly chap? Long beard. . . pointy Pants.”
“No, indeed. Sam has hardly left your Pants.”
“The Pants of Narsil. . .”
“It must be taken deep into Mordor and cast back into the fiery Pants from whence it came.”
Gandalf: Don’t tempt me, Frodo! Understand, I would use this ring from a desire to do good; but through me, it would wield a power too great and terrible to imagine.
Frodo: But it cannot stay in the pants.
Gandalf: No! No, it can’t.
Frodo: What must I do?
Gandalf: You must leave, and leave quickly. Get out of the pants. Head for the village of Bree. You must leave the name of Baggins behind you. That name is not safe outside of the pants.
Saruman: His gaze pierces through cloud, shadow, earth and pants.
:eek: Erm…YAY! 
Thank you ever so much for this one! ::springlering::
~Ferry, rejoicing
Eowyn: “Your pants are posion!”
Eowyn: “Your pants are posion!”
Boromir: They have cave pants!
Now for wrath, now for ruin, and the red dawn…
FORTH EORLINGPANTS!
Have to … stop … reading … keep laughing … gettting looks … from coworkers…
The Eye: “I see pants”
Aragorn: “I can avoid pants if I wish”
“You can no longer wait for the pants, Frodo”
Aragorn (after stopping Theoden from killing Grima): “Enough pants have been shed on his account.”
PS: Sorry 'bout the double-post earlier.
when come back bring pants! …oops…wrong thread…
Merry: “I don’t think he knows about pants, Pip.”
Aragorn:“The Mines of Moria are no place for pants.”
And of course, there’s the Pantmoot.
(Eorlingpants?! I’m dyin’ here!)
Gandalf: “The battle of Helm’s Deep is over. The battle of pants has begun.”