Naruto discovers one of Kushina's hobbies in Chapter 21, and Kushina's response to his reaction.
Kushina: Ah, good, you're home now. Go wash up, and I'll have dinner ready soon.
Naruto:(walking past kitchen) Okay.
(Beat—then Naruto backtracks to the kitchen and sees Kushina in a Shadow Fox costume)
Naruto:(incredulous) Mom, what are you WEARING?
Kushina:(casually) Hmm? Oh, this? I made it myself. Do you like it?
Naruto:(Face Palm) Oh, great...even my own mother's infected with this Shadow Fox fever! Next thing you'll be saying you got the comic book today...wait. You did, didn't you?
Kushina: What do you mean? I've been collecting the series ever since it first began publishing.
In Chapter 30, Kushina learns about Naruto and Hinata's Accidental Kiss. Her response? To ask if she should buy Naruto a pack of condoms for when he goes further with Hinata.
Aoi spies on Naruto's fight with Sasuke in Chapter 31, hanging from one of the Uchiha family's high walls in order to eavesdrop. Then a bird comes along and perches on his head, defying his efforts to make it leave.
Aoi: Hey! Get away! My head's not a nest!
And then in Chapter 32, when the bird finally leaves, one of the first things Aoi does is to check if his head got crapped in. Made funnier when it's revealed the bird is a mechanical scout made by Kankuro as a spying tool.
In Chapter 37, Hanabi's response to hearing that Naruto will be visiting the Hyuga mansion to talk to Hiashi.
Hanabi: That guy...coming to our house... (eyes Hinata) You're not pregnant, are you?
The tasks Naruto must pass to get in the Hyuuga's party.
First task, solve a Rubik's cube in the time it takes Hiashi to say the alphabet.
Hiashi:(Naruto starts on the cube) A. B. C. D. E. F.
Hiashi: Meaning, two different geographical locations at the same time. And bring evidence you have done so.
At the party, Naruto has brought Hiashi a video of himself staying with one foot in Fire County and one foot in Lightning County, being as hammy as possible.
Third and final task, a riddle:
"Then tell me..." Hiashi looked him straight in the eye. "What is the beginning of eternity, the end of time and space, the beginning of the end, and the end of every place?"
Naruto remained silent. Hiashi waited patiently; althrough he would never admit it, he had chosen this riddle because, years before, he himself hadn't been able to figure it out until Hanabi had nonchalantly walked into the room, glanced over his shoulder at his newspaper, and said...
"The letter E."
Some Black Humor after Dosu and Zaku break into Kushina's home and get trashed for it.
Kushina: And stop bleeding on my rug! That thing's not cheap, you know!
In chapter 59, Tsume stumbles on Minato and Orochimaru calmly talking as they ignore Itachi beating up Mizuki in the interrogation room. How they justify their inaction?
Tsume:(to Orochimaru) And you're just going to stand there and let your client be brutalized in that room?
Orochimaru: After today, I'll ask the judge to remove my name from the representation list for Mizuki. Even I have my dignity, you know. Besides, Itachi-kun didn't strike first just now—Mizuki did. A clear case of self-defense.
After Tsume has left to get a drink (that and she's pissed at Mizuki too for endangering her son), Itachi finishes the beating, leaves the interrogation room...and presses charges on Mizuki for assault. And Orochimaru apologizes for Itachi having to beat Mizuki up.