Banal??? This movie was groundbreaking and quite controversial when you compare it to other movies in the late ‘60s. Every character, from leads to bit parts, was interesting and original. Benjamin’s landlord (Norman Fell) and Mr. Robinson are both hilarious.
Silly??? Elvis movies and Beach,Blanket,Bingo are silly. The Graduate is not. Some of the funniest scenes are the little things, such as ‘track star’ Benjamin running to the church after running out of gas or the toaster popping up after Benjamin tells his parents he’s going to marry Elaine.
Forgettable??? I’ve seen this movie at least 10 times and will probably see it a few more times. If you’re looking for bathroom jokes or frat house humor then the Graduate is not the movie for you.
I found the movie banal and silly. "Inane" and "pretentious" also come to mind. As an aside, I do not find a need to insult or impugn the intelligence or taste of those whose opinion of a movie differs from mine.