Sam's interrogationtechniques are often funnier than they have any right to be. Same thing with his victims.
Sam needs someone (the vice president of the United States) to stay where they are without killing them in Conviction. ("SECURE") How does he do it? He nonchalantly blasts both of their kneecaps with his pistol, of course.
Michael Ironside did a interview on Double Agent and had a couple of funny lines.
I was on a plane going to London, and I asked for a coffee. And I heard someone go Sam Fisher, and I'm going, what? And I look up and there's this guy in an undone three piece suit going, You're Sam Fisher, and I went, No, I'm...I'm, wait a second I guess I am.
Sam Fisher could have been very two dimensional. He could have been very flat, cardboard, finish him...squiiick.
How about this conversation from Sam's Navy SEAL days?
Vic: My kids never draw me pictures or write or anything.
SEAL: They don't write 'cause you can't read, man.
Vic: Laugh it up. But when I get out of here-
Sam: You're going to kindergarten?
SEAL: You know I hear that they've got entrance exams in kindergarten now, Sam... I dunno if Vic's gonna make it in.