As others have said, I am an advocate of watching LIVE shows multiple times. Every live show is different. When I see a show the first time, you are usually just caught up in the with the performance, and miss a lot of the little things. I love to see a show multiple times to catch the little things I missed on the first go around. Also, it is fun to see different actors and sometimes I have found the standby to be better than the starring actor.
However, I think the most I have seen a show is maybe 10 times and that is including multiple runs on tour. I am embarrassed to say which show I have seen 10 times, as it is not my favorite, but it is one of the more popular shows on tour. I can say I have seen Book of Mormon 9 times including 4 times in SLC, and proud of it. As I don't live in NYC, if there is a great show in town, I see it multiple times. It is hard for me to sit at home, when there is a great show with Broadway talent in town.
If I am in NYC, there are too many other shows to see, instead of seeing the same show over and over again. There is no way I could see Book of Mormon again on Broadway, but I would buy another ticket on tour if it is near me.
Not to be confused with Dave19.