When Fez kisses Nina at the DMV, he puts his hands on her behind. When she turns to leave, we see two full hand prints on her white pants. However, before they kissed, she had been fingerprinting Fez, and only his finger tips would have had ink on them, not his full hands.
Eric (sarcastically): Thank God for the honest ones like Richard Nixon, huh?
Red: What did you say?
Eric: Nixon was framed and Kennedy was a commie!
That is the conversation in this episode; however, in the first season episode Streaking, Red asks President Ford why he pardoned Nixon:
Red (to President Ford): How the hell could you pardon Nixon?
In Streaking, Red is clearly angry when he asks his question; both his words and his tone indicate that he felt Nixon should not have been pardoned. But in Black Dog, he no longer feels that way, and seems to like Nixon, getting angry when Eric suggests that Nixon was a crook.
Fez: I am in pain.
Donna: (pats Fez's shoulder) Fez, we're really sorry about Nina. You know, rejection hurts.
Fez: No, Nina and I were kissing and she made me stop and now I am in pain.
Donna: (removes her hand) Ew.
Hyde: Now I'm gonna punish [Kelso] the way my parents punish me.
Eric: You're gonna leave him at the mall?
Kelso: It's not a gun, it's a BB gun. I lost it when I was 10 and I found it this morning buried in my backyard.
Donna: Why were you digging in your backyard?
Kelso: Uh, dinosaurs. Watch the news, Donna!
Jackie: Do you know what's going on?
Kitty: No, I don't know anything.
(Jackie leaves the room)
Kitty: I know everything!
Red: Look, Jackie. I know that things seem grim. But your father's rich, right?
Red: Well, then I'm sure that whatever trouble he's in, he'll buy his way out and wriggle free.
Jackie: You're right! I mean, this is America. The rich are treated differently here.
Red : Yep, and I'm so glad I took some shrapnel to make that possible.
Jackie: Me too!
Jackie: So come on Steven, let's shave that beard!
Donna: Jackie, you just gave an order in the form of a cheer.
Charlie McDaniel (Re-recording Mixer), Craig Porter (Re-recording Mixer), and Vince Rohr (Production Sound Mixer) were nominated for an Emmy in the category of "Outstanding Multi-Camera Sound Mixing for a Series or Special" for their work on episodes 5 through 10 of this season.