Complex sentence: Dick Brooks also searched out Brother Theodore, whose career had waned, to do several seasons of midnight shows, and helped to bring him back to prominence that led to Theodore appearing on The Tom Snyder Tomorrow Show and a long series of TV and movie appearances.
Split into simpler sentences: Dick Brooks also searched out Brother Theodore, whose career had waned, to do several seasons of midnight shows, and helped to bring him back to prominence. After that Theodore appeared on The Tom Snyder Tomorrow Show and a long series of TV and movie appearances.