"Just keep dreamin' cause I won't let you destroy
Earth!" Goku.
"My name is Goku and I'm a saiyan." Goku said this to the Ginyu force when he arrived on Namek.
"DADDYYYYYYYYYYYYYYY!!!!!!!!!!!!!!!!" Gohan - After Goku was killed by Cell.
"It's all or nothing there is no in-between." Gohan - Room Of Spirit And Time.
"What's a Goooooku?" - King Cold just before he dies at the hands of Trunks.
"Oops! Sorry Chi Chi... I guess I don't know my own strength!" Goku - Right before Goku battles the Androids.
*Muffled* "This stuff is delicious." Goku - Throughout the series.
"KAMEHAMEHA!" Goku Throughout the Series.
"It'll be the end of us all!" - Trunks - Android/Cell
Saga.
"You should know the sword doesn't make the man." - Trunks - Freeza Saga.
"I do plenty of sit-ups and drink lots of juice!" -
Vegeta - Cell Saga.
"Nooo!" - Goku - When Namek blows up and it shows Goku SSJ, covered in the blast.
"You sure beat that boy fast, Trunks!" - Goten - At the world tournament after Trunks beat Adeaza.
"I can feel it slipping" - Gohan - Just before he goes SSJ2.
"My name is Brolli... and i'm the devil" - Brolli - During one of the movies.
"For Gohan!!!!" - Trunks - As he kills 18 in the future.
"First Piccolo... now my best friend Krillin... I'm not going to let you get away with this... Aaaahhhhh!!!!" - Goku - When he goes SS.
"Where there's a will, there's a way" - Goku - When telling the Z Fighters how he escaped the Namek explosion.
"Listen! This is my home and these are my friends so it doesn't matter what you say I am" - Goku - To nappa and Vegeta when they fight on earth.
"I am the prince of all saiyans once again" - Vegeta - When before he fought Android 20.
"No one kills Kakarot while Ii'm around" - Vegeta - When he saves Goku from Android 19.
I will face the Androids face to face and I'll brake them with my bare hands" - Vegeta - When Androids 17 and 18 appear.
"Time has run out for you, Android" - Vegeta - As he powers up his big bang attack, this is when he kills Andriod 19.
"Kamiccolo!" - Goku - After he finds out that Piccolo fused with Kami.
"Are you impressed?" - Cell - After he easily regenerates from Vegeta's Final Flash attack.
"Whats this doing in here. I prefer a sports drink They're better tasting and are good for you" - Goku - When Goku takes a beer out of the refrigerator enroute to Namek.
"Dang it Freeza!!" - Goku - Namek Saga This is my fav because he says it about two times during one episode and we all know he's saying dammit.
"My name is Recuum, it rhymes with doom, and you'll be hurting all too soon" - Recuum - Namek Saga.
"Ribbit" - Captain Ginyu - After being turned into a frog, Namek Saga
"This is one battle Goku will never win" - Piccolo - Commenting on the argument between Goku and Chi Chi, Android Saga.
"I'll see you...in the next dimension!" - Vegeta - throughout most of DBZ.
"I'm going to have more fun before this place explodes. I've always been told to make every second count."- Frieza - While fighting Goku on Namek.
"I am no longer Goku or Vegeta. I am the instrument of your death." - Gogeta - To Janemba in DBZ movie #12.
"You could say we're brothers." - Imperfect Cell - To Piccolo when they first met.
"We gonna dance or are we gonna fight?" - Goku - While fighting the Ginyu force on Namek.
"All that power and yet he desires nothing." - Vegeta - After seeing Goku's power level on Namek.
"I have all a man can desire" - Goku - Tells this to Freeza after refusing to be at his side.
"Ah so you must be Freeza?" - Trunks - Tells this to Frieza when he lands on Earth.
"Its over, you power is decreasing with every blow, you're not even a challenge to me anymore, I'm satisfied... and to make things worse, you were beaten by a ... (snicker)... Monkey, right?" - Goku - says this to Freeza when he realizes that Freeza is no longer a challenge.
"Freeza you fool!! I give you power to live and this is how you repay me!?" - Goku - Says this to Frieza as he destroys him.
"Is that all you got?" - Gohan - Right after cell powers up to full strength.
"Good fight kid but like all good things it must come to an end" - Cell - As he blasted Gohan into a cliff.
"You are fresh out of the factory without a warranty" - Vegeta - Seconds before Vegeta Kills 19.
"Can I be like you now?" - Goten - When Goten and Gohan are training, Goten asks Gohan if he could go SS.
"If you give up now, I promise I'll turn you into something practical...like a toaster, or a washing machine" - Vegeta - to Android 18.
"Birdy a birdy, Goten is a birdy!" - Goten - After Gohan teachers him to fly.
"It's amazing how everytime you open you're mouth you prove you're an idiot!" - Vegeta - To Bluma before Freiza landed on Earth.
"I'm about to show you what it's like to fight a real Super Saiyan, and I'm not talking about Goku!" - Trunks - To Freiza.
"Janemba Janemba Janemba!" - Janemba - Movie 12.
"I've seen stronger house plants!" - Vegeta - To the Z fighters, after Trunk won the tournament, about Mr. Satan's "strength".
"Hey, Goten, your dead father doesn't look all that tough. I bet my dad could beat him, no sweat." - Trunks - To Goten during the tournament, after having met Goku.
"Well, Trunks, at least we know you'll grow up to be a handsome young man. And think, all this time, I was worried that you'd look like your dad!" - Bulma - examining baby Trunks after finding out that the purple hair boy from the future is Trunks.
"It's times like these that I wish I had become a shoe salesman." - Krillin - When Goku is fighting Freza.
"Well, if I have to fight Kakarott in the first round, the first thing I'm gonna do is punch him in the gut!!!" - Vegeta - After Goku told no one to punch him in the gut after the Junior division of the world tournement.
"Cool, I didn't know the circus was in town." - Goku- After landing on the planet Yardrin.
"Go forth, my Goten, and prepare the candy!" - Chibi-Trunks - Buu Saga.
"Im a warrior!! Not a variety of flower!!" - Vegeta - Says this to Bulma when he is forced to wear a pink shirt and yellow pants.
"I know Krillin has a crush on 18! Krillin, you dog!" - Gohan - Says this when Krillin uses his wish to take the explosives out of the androids at the end of the cell saga
"Insted of 'Monkey see-Monkey do', its 'See monkey-Do monkey!" - King Kai - The episode before Gokou starts his training with King Kai.
"Round and Round the monkey goes. If he should stop, off with his nose!" - Frieza - Before he gets sliced in half.
"That's one explanation, here's another one! Vegeta's lost his mind and he's gonna fry us all!!!" - Krillin - Before Vegeta fired his Final Flash attack at Cell.