Born in 1975

A selection from Wikipedia's '1975 in the United States'. Not a complete list.

• January 20 – Talent agent Michael Ovitz founds the Creative Artists Agency.
• March 19 – The release of Tommy, a musical/drama produced by Ken Russel and Robert Stigwood.
• April 4 – Bill Gates founds Microsoft in Albuquerque, New Mexico.
• April 30 – Vietnam War: The Fall of Saigon: The Vietnam War ends as Communist forces take Saigon, resulting in mass evacuations of Americans and South Vietnamese. As the capital is taken, South Vietnam surrenders unconditionally.
• June 20 – Universal Pictures releases Steven Spielberg's adaptation of Peter Benchley's bestseller Jaws in 409 cinemas across the United States. The coupling of this broad distribution pattern with the movie's then even rarer national television marketing campaign has yielded a release method virtually unheard-of.
• August 3 – The Louisiana Superdome opens in New Orleans.
• August 25 – Bruce Springsteen's album Born to Run is released.
• October 11 – NBC airs the first episode of Saturday Night Live (George Carlin is the first host; Billy Preston and Janis Ian the first musical guests).

Source: Wikipedia (CC BY-SA 4.0)

• Pet Rock
• Dungeons & Dragons
• Evel Knievel