Here's cinematic proof from as far back as the mid 90's that there was life at the Jersey Shore before MTV's The Jersey Shore and that the current cast is easily replaceable.

Wildwood, NJ: The Movie (1994)

Guido Beach (2008)

The Dog Brothers (MTV's Sex in the 90's)

The Jersey Shore Season 2 Preview Trailer (2010)

From Wikipedia: "Guido" is a pejorative slang term for a young, lower class or working class, Italian-American male from the urban Northeastern United States. The Guido stereotype is often portrayed as humorously and incorrigibly uncultured, with a thuggish and overtly macho attitude and an unyielding pride in his Italian ancestry."