Possible Clues:

• Onetime "SCTV" head writer Harold
• ''Ghostbusters'' star
• ''Analyze This'' director
• 'Stripes' actor Harold
• "Ghostbusters" actor Harold
• Director of 'Caddyshack' and 'Groundhog Day'
• "Caddyshack" director Harold
• 'Ghostbusters' actor
• Harold who directed some episodes of "The Office"
• Harold who directed 'Caddyshack'