A good learning tool
As a marginally famous person I must admit that this movie definitely captures what it is like to be recognized by others you do not know, and how the personality can become completely jaded by others pre-conceived notions about who you could be.
Sandler did a great job of capturing this aspect as well as did Rogan, being the humble personality he played in his role.
Schwartzman's score is also one of the aspects I loved about the film.
I give it an 8.