You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Leno's Last 'Tonight Show' Draws 15 Million Viewers, Most in 15 Years Show's Record, 22 Million, Came After 'Cheers' Finale in 1993 , Published on February 07, 2014 2 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Register Now Already a member? Log in.