Gerard Schachmes / Regards / Retna Ltd. 1 / 6
Gerard Schachmes / Regards / Retna Ltd. 1 / 6

Peter Fonda, who co-starred with Dennis Hopper in the counterculture road film, "Easy Rider," opened up today about the death of his friend. Hopper died today of complications from prostate cancer in Venice. He was 74.

RELATED: Stars react to Hopper's death

Peter tells ET, "Dennis introduced me to the world of Pop Art and 'lost' films. We rode the highways of America and changed the way movies were made in Hollywood. I was blessed by his passion and friendship."

RELATED: Dennis Hopper's life in pictures

Related stories: Dennis Hopper Recieves A Star on the Hollywood Walk of Fame