Conversation so far:
What was Rosie O'Donnell's earlier work?
Rosie O'Donnell toured as a stand-up comedian in clubs from 1979 to 1984. She got her first big break on Star Search, explaining on Larry King Live
Was Rosie O'Donnell successful as a stand-up comedian from 1979 to 1984?
Rosie O'Donnell participated in Star Search and won five weeks in a row. this gave her national exposure.

Question: what is star search?
Self-contained rewrite: What is Star Search?