Sorted by relevant character and roughly chronological for each (also, sorry I’m taking so many good ones, but I couldn’t stop thinking of ones I wanted to mention):
“Criminals are a superstitious and cowardly lot, so my disguise must be able to strike terror into their hearts. I must be a creature of the night, black, terrible… a… a- A bat! That’s it! It’s an omen… I shall become a bat!” (Bruce Wayne, Detective Comics #33)
“I’m Batman.” (Batman, Batman 1989)
“Where does he get all those wonderful toys?” (Batman, Batman 1989)
“I am vengeance! I am the night! I am Batman!” (Batman, Batman: The Animated Series, Nothing to Fear)
“Think of it, Batman: to never again walk on a summer’s day with a hot wind in your face, and a warm hand to hold. Oh yes, I’d kill for that.” (Mr. Freeze, Batman: The Animated Series, Heart of Ice)
“It was a big rock.” (“Killer Croc,” Batman The Animated Series, Almost Got 'Im)
“Look! Up in the sky! It’s a bird! It’s a plane! It’s Superman!” (Multiple, various media)
“Faster than a speeding bullet! More powerful than a locomotive! Able to leap tall buildings in a single bound! This amazing stranger from the planet Krypton! The Man of Steel - Superman!” (Narration, Max Fleischer Superman Theatrical Cartoons)
“I’ve got you.”
“Who’s got you?!”
(Superman and Lois Lane, Superman: The Movie) (Interesting note: the screenplay for this movie was written by Mario Puzo, better known for writing the novel of the Godfather.)
“In brightest day… in blackest night, no evil shall escape my sight! Let those who worship evil’s might, beware my power – Green Lantern’s light!” (Hal Jordan, Showcase #22)
“What, like a bunch of superfriends?”
“More like a Justice League.”
(The Flash and Superman, Justice League, Secret Origins Part III)
“Please. I go through everyone’s trash.” (The Question, Justice League Unlimited, Fearful Symmetry)
“Orange socks?” (The Question, Justice League Unlimited, Double Date)
“The plastic tips on the ends of shoelaces are called aglets; their true purpose is sinister.” (The Question, Justice League Unlimited, Question Authority)
(Also basically everything else out of the Question’s mouth in that show.)
"You were suppose to understand," 
"I’ll make you understand!"
His voice just aaaahh i want his voice 
