Conversation so far:
What type of drama shows did John Barrowman star in?
Titans and Central Park West
What role did John Barrowman play in the soap operas?
Peter Fairchild in Central Park West (1995)
What else did John Barrowman do after starring in the soap operas?
Barrowman then appeared as Peter Williams in Titans (2000).

Question: Did he have a successful career in prime time?
Self-contained rewrite: Did John Barrowman have a successful career in prime time?