Complex sentence: The result was a $250,000 dialogue propeled film filled with energy and charm that captivated audiences and critics and not only established a cult following, but also jump-started the careers of the featured actors, most notably Vaughn.
Split into simpler sentences: The result was a $250,000 dialogue propeled film filled with energy and charm that became a sleeper hit and critical success. In additin to establishing a cult following, it jump-started the careers of the featured actors, most notably Vaughn.