As late-night television declines, The Tonight Show host is preparing for tomorrow by building an entertainment empire based on his irrepressible joy. With the launch of his new marketing competition show, On Brand, Jimmy Fallon's getting down to business. Subscribe to FORBES: https://www.youtube.com/user/Forbes?sub_confirmation=1 Fuel your success with Forbes. Gain unlimited access to premium journalism, including breaking news, groundbreaking in-depth reported stories, daily digests and more.