"you know, one time, i was doing this." ( laughter ) because, "yeah, i know, i was there." >> anne garefinoeir relationship is one of the strongest partnerships i've ever seen in any business. >> kroft: ann garefino and scott rudin know them as well as anyone, and have been with them since the very beginning. garefino is the executive producer of "south park," and rudin is the entertainment mogul who launched their film careers. both produced the broadway musical. >> scott rudin: sometimes, i've seen people try and triangulate one against the other. but, you know, you see people try to get between them, they shut it down so fast. they have each other's backs in the absolute best possible way. and it doesn't mean they don't disagree, because they frequently disagree, but they are genuinely a partnership. >> kroft: garefino thinks that matt stone is the more ruthless of the two when it comes to satire, and that trey is softer with a sweet sense of humor that provides the charm. we wanted to know what they thought of that analysis. >> stone: that anne's pretty smart. >> parker: anne's a bitch.