- After Ryuk's presence has been acknowledged by several people:
Light: Ryuk, what the hell?!
Ryuk: Nobody ever talks to me, so I naturally assumed...
- Light explains how he is going to hide the Death Note
Ryuk: Is he still talking?
Light: explains further
Ryuk: I'm sure it will become important for later episodes.
- The Take That to 4Kids Entertainment:
Raye: We're here to censor you. American kids can't handle all this killing. Let's see take out all the killings, rework the plot (that goes without saying), insert some friendship speeches...
- The running gags on L's quirky habits:
Matsuda: Why are you using so much sugar?
L: I have diabetes.
Matsuda: Then maybe you shouldn't use that much sugar...
L: Excuse me, WHICH one of us has diabetes?!
Light: Why are you sitting like that?
L: I have scoliosis.
Light: Then maybe you shouldn't sit like that.
- Light is invited to taskforce headquarters:
Matsuda: Heh, look at him, pretending not to be Kira. He's probably trying to kill me with his mind, right now.
- "Attention, faggot: My Mustache is telling you to shut your f*cking mouth!"
- "We're out of cake."
- Light admits that he "could" be Kira:
You're Kira? How dare you dishonor our family like this. You are so grounded
Light: Ryuuzaki! You've got to let me out of here!
L: You've only been in there for twenty-five minutes.
L: Hey Light, you all right? We remembered to feed him, right guys?
- Light and L are chained together:
Misa: Wait, you like this don't you! My boyfriend is GAY!
- Ryuk's Spaceland T-shirt.
- After Light's mother asks him if he wants dinner
Ooh, I know! You could take one of my potato chips...and eat it!
Light: SHUT THE F*CK UP, THAT'S NEVER BEEN FUNNY!
- In episode 14, before and during the chain fist fight:
L: *sigh* Last night.
Light: What was that?
L: Oh, yeah. Just pretend you don't know!
Light: Y-you see, this is the problem! You don't open up for me.
L: Everytime I do open up for you, you hurt me.
- After Light punches L across the room, we have this little gem:
Light: I'm sick of this emo attitude of yours! Why don't you just go cry to your parents!? OH, WAIT! YOU DON'T HAVE ANY PARENTS, DO YOU!?
- It might be even funnier, if you know that in the real series, L is an orphan.
- From the Christmas Comment Special:
Watari: (offscreen) L! I got you all the Fruits Basket episodes on VHS, like you begged me for.
L: Aw, fuck yeah!
Light: *singsong* Gayyyyy...
L: Oh, I'm gay? Why don't you try spelling your last name backwards?
Light: Hmm... "Yagami". I'm... a... ga- (beat) Oh, you son of of bitch!
Light: Hey isn't my father supposed to be reading these with me?
-Cue Ambulance Driving away-
Sorichiro: Fucking MATSUDA!!!!
- The theater scene in Episode 8.