And he takes that line and draws it out all so slow!! Wonderful...his voice is so rich and different from so many other actors...it is really a treasure. That is how I fell in love with my husband...his voice...it is so gruff and gravely and sexy.....so I know a thing or 2 about voices. Patrick McGoohan's was sublime. His cadence and syntax are beyong compare. And, as was pointed out by YM, his true voice can be heard in Identity Crisis.
And what about that 'little' scene where Columbo visits him at his home while he is having that party and McGoohan is pouring the orange juice?? Such simple scenes like that are just pure splendour.