Smallville, Season 4

Lex:
Clark, you don't seem like your usual self. You barely said a word the entire ride home.

Lionel [in Clark]:
Sorry. Being in that prison... I guess it upset me.

Lex:
Yeah, well, it isn't exactly the happiest place on earth.

Lionel [in Clark]:
No, it isn't, Lex. Do you ever feel guilty? Sending your father to prison, I mean.

Lex:
Why would I? The man murdered his parents. I did society a favor.

Lionel [in Clark]:
And that blood relationship, it doesn't mean anything to you?

Lex:
Clark, since when did you become president of my father's fan club?

Lionel [in Clark]:
You're right. Of course. He's only your father. Why should you feel anything?