See:
Ffolkes/North Sea Hijack
Roger Moore played a bearded, eccentric antiterrorist expert (reminiscent of James Robertson Justice) who is called in when a criminal gang, led by Anthony Perkins, take over a couple of oil rigs.
Moore was great in this character role. (I particularly enjoy the way he delivers the line: "I like cats. And I don't like people who don't.")
Sounds like he would've found a kindred spirit in a certain international master-criminal...
