There is also what ensues if they are ever allowed near a car. After running over Dallas and his goons, they accidentally hit Szilard, who jumped out a window right before them. Isaac panics and sets the car in reverse, and manages to run over Dallas again. And the best part about this... THEY ARE USING SZILARD'S CAR!
Their use of the Chewbacca Defense (it's the page quote) upon first meeting Jacuzzi had this troper in stitches.
Don't forget the "perfect" souvenir they finally settle on for Ennis: Czeslaw. Yes, Isaac and Miria really think a new brother is a great gift.
The scene where Isaac and Miria attempt to steal the recently-aquired potion of immortality from Dallas and his thugs, under the impression that it's full of money:
Isaac: Hold it! Dallas: Who're you?! Isaac: A man who came back from the Reichenbach Falls with a vengeance! Professor Moriarty! Beat Isaac: Yes, well... Would you believe Jack the Ripper?
And, after seeing numerous advertisements for Baccano in Durarara!!, they suddenly appear in episode eleven. And they're members of Dollars.
Practically anything involving Isaac and Miria, really.
Something about Claire "The Rail Tracer" Stanfield having a normal and almost civilized lunch with Rachel so he could get love advice is pretty damn hysterical. Rachel's 0_0 reaction throughout only enhances the funny.
Right before that when he walks up to Rachel and Czes. He acts chummy and says he's going to let them both off the hook for their actions on the train. It suddenly clicks in Czes's head who this man is. Czes starts screaming bloody murder and runs away. Claire gets this looks on his face as if he's thinking, "Huh...what a weird little kid."
"Your ticket, please."
Your mileage may vary on that one though—Jerry Jewell's delivery of the line made it downright creepy.
There's a scene in episode eight where Isaac and Miria think that Jaccuzi's dead. They start to cry and melodramatically state that the poor boy will always live on in their hearts, complete with Chopin's Etude 10 playing in the background. The music abruptly stops and starts in between scenes of a completely unharmed Jacuzzi running down the hall, trying to get their attention.
Nowhere near as funny as HOW they came to the conclusion that Jacuzzi is dead, complete with an imagination spot that has Jacuzzi being eaten by a giant snake that is made to look like it was animated in crayon.
"Know where a real cowboy keeps his gun? His heart!"
Isaac: "This train has become like the Romance of the Three Kingdoms."
There's also a funny scene in the episode which flashes back to Ladd's meeting with Graham Spector. Ladd is told by his uncle, the Boss of the Russo family to send a message to someone. Ladd responds that when his uncle uses vague phrasing like that, he is likely to interpret it as "feel free to go crazy and kill everyone". His uncle repeats his instructions with a sly smile, and Ladd goes positively giddy and thanks his uncle. As Ladd leaves, the uncle mutters about Ladd being a "crazy bastard". Ladd goes back in and asks, "what was that?". His uncle then shouts for him to get going.
During Ladd and Graham's fight scene, something about the way Graham hit the car after Ladd threw him into it made this troper (and her friend) almost die laughing.
"Hey Maiza! How come killin' us don't make us dead?"
The "We all came here alone" scene in the bonus episode was a Crowning Moment of Heartwarming but Graham's reponse to is this trope. "Can't argue with that logic."
Victor "comforts" Firo about going to Alcatraz with the knowledge that, what with looking so young and feminine, he'll probably be quite popular there.
Victor: Well, what if I told you you'd be popular inside? You're pretty enough I wager you'd be a minor celebrity there in a matter of days. Then again, I suppose the warden over there has things locked down tight enough that nothing like that would really happen, so you don't have to worry.
Firo: ...Noah, mind if I kill your boss?
Jacuzzi collapsing when he meets Claire, who introduces himself as the Rail Tracer.
Rachel receives a huge reward for helping rescue the Senator's wife and daughter. What does she do with it? Retroactively buy a ticket for every free train ride she's taken. Claire must have left quite an impression.
Jacuzzi and Goose's fight being interrupted by Isaac and Miria swinging past on a rope screaming their heads off. Goose gets knocked on his back, sits up, and wonders, "What the hell just happened?"
The entire dominoes sequence. Firo walks in on Isaac and Miria setting up a massive number of dominoes to knock down later, then notices other people helping them out one by one. Randy and Pezzo aren't terribly surprising. Lia is probably to be expected. Even Mazia is fairly plausible. Ennis? Not so much. At that point, Firo gives up and joins in.
In Deep Marble, the series' equivalent of Nyarlathotep decides to pay Victor Talbot a surprise visit... to correct a spelling error.