Although "Catcher in the Rye" is a good novel, it may not be the most influential of all time. Books like George Orwell's "1984," John Steinbeck's "East of Eden," Ernest Hemingway's "For Whom the Bell Tolls," and J.R.R. Tolkien's "The Lord of the Rings" compete for the title of most influential. The reason is that the works I listed inspired an entirely new generation of contemporary authors who are currently blockbusters in their own right.
Catcher in the Rye is a great novel, don't get me wrong, but to say it is the most influential novel of all time is just not true. There are a lot of novels that are more influential, especially in the day and age. The novel 1984 or Fahrenheit 451 are more influential in my opinion.