My favourites from the episodes I've seen so far:
Vince Noir: C'mon, Howard, let's get out of here.
Howard Moon: Stop tugging at my mink!
Vince Noir: Mink? That's a bit off, isn't it? You're supposed to be a zookeeper.
Howard Moon: Yeah, well, it's a different law in the tundra, Vince. It's kill or be killed.
Vince Noir: What, by a mink?
Howard Moon: They get very big out here.
[gesturing at floor-length mink coat]
Howard Moon: This whole thing is just one mink.
Vince Noir: That's not right. I know, I read a pamphlet.
Howard Moon: So? I once glanced at a hedge. What's your point?
Vince Noir: "What was that? You jack of clubs! I said could you help me, not blow dust in my eyes!"
Those two made me laugh my arse off quite literally.