Steve Jobs keynotes
Apple is famous for its entertaining, world-class product presentations, that attract press coverage (read: free advertising) from the entire world — and there is no debate as to who built this reputation. Steve Jobs's celebrity and charisma made him "the closest thing to a rock star in the world of business". During his second tenure at Apple, between 1997 and 2011, he appeared 4 to 7 times a year (when he was healthy, of course) to unveil new products during one of his trademark 'keynotes'. While he was notoriously a capricious speaker who refused to rehearse in his late twenties, he perfected his art at NeXT, and came back to Apple as the best showman of the industry.