The scene in the comic where Stone of Destiny and the Holy Grail greet each other when they're alone.
Remember, they are both ancient mystical artifacts.
In "City of Stone, Part 4", Goliath tries to stop Demona and Macbeth from fighting. He grabs them as they are locked in combat, only to get a face full of fist from both of them simultaneously. Serious moment, but by gosh was it funny.
Xanatos after creating his own Frankestein's Monster with Demona's help:
Xanatos: "It's alive! Aliiiiiiiive! ...I've always wanted to say that."
Thailog hearing Goliath let loose an angry roar:
Now I know where I got the temper.
Brooklyn notices that his own clone is apparently having more romantic luck than him.
Oh, you gotta be kiddin' me...
Xanatos: "It's my first real stab at cliched villainy..." (casually) "How am I doing?"
Broadway: "This surround-sound is incredible!"
Lexington: "I don't remember any explosions in Bambi."
It may be Canon Discontinuity, but "And Justice For All" features Goliath making a Dynamic Entry into the courtroom where his sentence is about to be given, with the real criminal in tow. His first line afterwards: "Please forgive the dramatic entrance, Your Honor."
In the only canon episode of the Goliath Chronicles we have this golden line when Macbeth is having a live debate against a Gargoyle hater:
Macbeth: Madam, they burnt witches like you in the middle ages!
The episode where Xanatos captures Hudson gives us this moment:
Xanatos: We need a piece of your skin, Hudson.
Hudons: You'll have the Devil's own task getting it!
Xanatos: Really? <Pulls out tray from underneath Hudson, picks up one of his sheddings, and closes it>. Gee, that wasn't as hard as you made it sound.
The climax of City of Stone where Demona has just given them the access code. Xanatos zooms up to the computers, deactivates the destruct-sequence with seconds to spare, and wipes his brow with a sigh of relief. And there's Bronx, staring right at him.
Xanatos: What are you looking at?
Fox and Hyena sharing a cell and entertaining themselves with Sartre and shooting cockroaches with a slingshot, respectively:
Hyena: Why do you read that stuff anyway?
Fox: Because Nietzsche's too butch and Kafka reminds me of your little friends over there.