I have heard the same gripe over and over on here from people who don't fully understand what it takes to become good in the entertainment industry. That's one of the drawbacks to watching comedians on KZbin. You can see a progression and then realize that his act doesn't change much. I was a entertainer for 30 years, and I can tell you that a professional entertainer, be he a comedian, a magician or something else, does the same act for a DIFFERENT audience every night. The professional knows that this is the only way to become good. And some times, it takes years to perfect something in the act. Of course Harrison is going to use material again. Because he know that it WORKS! I have seen him live, and know his routines pretty well, and yet every time, he slays the audience!