CRC cards are known as one of the simple, intuitive method to simulate your system before creating it. Many people praises its goodness with a few of criticism but I could not find well, solid examples about its actual usage or good case studies.
YouTube only provides two direct examples how CRC methods are used - both of them are played in not american, even the creators of the method are two great american ^^. How funny?
So here I want to know how many people actually uses CRC in design session? Is it still valid or great? Is it worth to investigate, practice and put in many hours?