The Only Actor in Both Generations of Batman Movies

Nicky Katt appears in both Batman & Robin as "Spike", as well as The Dark Knight as the [uncredited] S.W.A.T. member in the passenger seat of the unknown driver (later revealed to be Liutenant Gordon).

I recognize Nicky Katt most for his role in The Boiler Room, where he was a real jerk senior broker, as well as an arrogant cop in Christopher Nolan's Insomnia.

I don't even remember his character from Batman & Robin, but I do remember him being in it. It must have been a small role, but it's not worth revisiting.

In The Dark Knight, he's the one spouting all the one-liners during the famous SWAT van chase scene. Ordinarily, it would come off as cheesy, but his mouthiness really worked in the context of the scene. It's one of the biggest action sequences in the entire film, with no musical score, so the monologue is a key component in the soundtrack. It's very, very similar to Batman and Bane's sewer fight in The Dark Knight Rises, in that sense.

Come to think of it, the entire Dark Knight trilogy has some borderline cheesy one-liners, which I hate at first, but is all part of the fun on repeat viewings.