. >> simon: many foundations representing major artists like andy warhol, keith haring, and willem dere refusing to authenticate works brought to them at all. francis o'connor is the world's top jackson pollock expert. he says he can spot a fake pollock in a second, but these days he is keeping his opinions to himself. what if i were to come to you and say, "this has been presented to me as a pollock." >> francis o'connor: someone comes to me about once a week. i just let it go by. >> simon: let it go by? >> o'connor: in other words, ignore it. >> simon: i'm not quite sure i understand. if i come to you and i say, "hey, this has been presented to me as a pollock," and you can see right away that it isn't, you're not going to tell me, "this is not a pollock"? >> o'connor: i would be very hesitant to give any opinion at that point, because of the legal situation. >> simon: where do i go to see whether my painting is a real pollock or not? >> o'connor: there is nowhere to go. >> simon: when collectors do have suspicions about their paintings, one of the few places they can go is jamie ma

. >> simon: many foundations representing major artists like andy warhol, keith haring, and willem de kooning are refusing andy warhol, keith haring, and willem de kooning are refusing to[ mhee announcer ] with pain r of fast is good and faster is better. good thing walgreens gets you in and out in no .time so you get the relief you need with new fast acting advil. at the corner of happy and healthy. [poof!] [beep] [clicks mouse] nice office. how you doing? good. automatic discounts the moment you sign up. >> neeson: i'm 61 years of age, man, you know? going around, fighting these guys, i feel a wee bit embarrassed, you know? and, of course, there's always a part of mind you think, "oh, i wish i was 37 years of age again," you know. >> i will find you, and i will kill you. >> cooper: he was 56 when "taken," the first action thriller he starred in, came out. it cost just $25 million to make, and earned more than $250 million at the box office. he was as surprised as anyoneca. >> neeson: i was convinced it was straight to video so it would go under the radar. >> cooper: why did you thin