Superman: The Animated Series, Season 1

[Lex Luthor sees Superman hovering outside his bay window, silently staring at him]

Lex Luthor:
I'm afraid we already have a window washer.

[No response.]

Lex Luthor:
Oh, the silent treatment, eh? Well, I don't know what you thought you heard out there, but I know what you can prove, and it's nothing. [still no response] You see, uh... Super-man... I own Metropolis. My technology built it, my will keeps it going, and nearly two-thirds of its people work for me whether they know it or not. Even you have to admit, it's a model of efficiency. And yet, I've often thought... why limit myself to just one city? A being with your abilities could be very useful to me on a, shall we say, global scale? Why don't you float on in and we'll discuss it?

[Still no response.]

Lex Luthor:
[loses his composure] SAY SOMETHING!

[He grabs the model of the Lexo-Skel Suit 5000 and hurls it at Superman, who catches it and crushes it into powder between his hands.]

Superman:
I'll be watching you, Luthor.