"Under sun and sky, Outlander - we greet you warmly." -Dunmer
You see, this is why I can't stand how Oblivion's greetings were condensed down to "HI THERE!"
"You choose to spend your time with me? You humble me."
"Well, here's a fine one! Speak freely."
"Hail and welcome, friend. Hail!"
"Salute! Welcome! Please say your piece."
"This is a grand day. Greetings."
"Today's your lucky day, so let's hear it."
"I take it you want something. Well, what is it."
"What's your story?"
"May the wind be on your back."
"Say your piece or stand aside."
"Someone should teach you some manners"
"Bother me again, and you might live to regret it."
"You remind me of a witch I once knew. I hate witches."
"Get out of here before you get hurt."
"Are you here to challenge me? I don't think so."
"What do you want, ashborn?"
"Greetings, Dunmer."
"Greetings, my Dunmer brother/sister."
"I'm very happy to make your acquaintance."
"I am never too busy for good talk."
"Please, join me."
"It's so good to meet you."
"Walk with virtue, friend."
"May I help you?"
"I'm listening. Go ahead."
"You may speak."
"What is it, sera?"
"What is it, muthsera?"
"Spit it out or hit the road."
"Whatever you're looking for, I'm sure I don't know how to find it."
"If you'll excuse me, I don't have time for you right now. Or ever."
"What hole did you crawl out of?"
"You remind me of my homeland. During the Blight."
"You have something to say, dungheap?"
"Greetings, Orc."
"Greetings, blood of Orsinium."
"I feel I can truly share with you, without fear."
"A sincere welcome to you. May you be forever blessed."
"A hail and hardy welcome, friend."
"Such good company. Welcome.
"Do not fear. I will assist you however I can."
"May your kills be quick and many."
"Ask and I will listen."
"You seek my help?"
"Fight well."
"Blade and bone. Speak to me."
"Hurry up, before I change my mind."
"Annoying creature."
"I haven't time for fools."
"By what right do you disturb me?"
"I've killed far worse than you."
"Something on your mind, goldenrod?"
"Greetings, High Elf"
"Greetings, fellow Altmer."
"Welcome! If you wish to talk, it is really no trouble at all."
"How delightful! Welcome."
"An honor to be sure."
"You're in good company, friend. Welcome."
"You seem quite intriguing. Please, share your thoughts."
"Greetings. What exactly do you require of me?"
"I see you. Hello."
"All right then, I'm listening."
"Any time now."
"Ah, how quaint. How do you do?"
"Identify yourself."
"Is it necessary that you speak with ME?"
"Ask a commoner."
"You creatures are all the same."
"This is an unwelcome surprise."
"Something on your mind, furlicker?"
"Greetings, Khajiit."
"Greetings, clan-mate."
"May you walk on warm sands."
"Warm day to you, friend."
"Sugar and sands, friend."
"Good friend. This is an honor.
"Swift hunting, friend."
"Its scent is unfamiliar."
"It has no master?"
"Good hunting."
"You have words?"
"Speak while the sands are warm."
"Khajiit has no words for you."
"It comes near. What does it want?"
"To greet you? Or eat you?"
"Go away. Do not come back."
"Can it speak? Can it make words?"
"Greetings, Redguard."
"Come to bother me with a war story, Redguard?"
"Greetings, child of the Ra Gada."
"What did I do to deserve this honor?"
"The pleasure is all mine."
"I like what I see."
"Well, what have we here?"
"Anytime, friend. I'm right here."
"So, what's this about?"
"What's your story?"
"You've got my ear. Let's hear it."
"Talk is free. What do you want?"
"What brings you here?"
"Nothing's keeping you here. So move on."
"Keep walking."
"If you're looking for trouble, you're getting very warm."
"I don't think so."
"Get lost."
There are more to disprove "HI THERE!", but this is my favorite:
"Ho hey, sweet lady of Wayrest! Ho hey, sweet lady of mine! Oh I'll see you again, yes I'll see you again, sweet lady of Wayrest so fine!"