From Steve Allen to Jay Leno – All of ‘Tonight Show’s’ Hosts and Sidekicks Before Jimmy Fallon (Photos)

Leno takes his final bow on Thursday; 11 days later, Fallon will become the 10th host of the legendary NBC talk show. The exiting “Late Night” host and his announcer Steve Higgins will have some serious shoes to fill when “The Tonight Show” returns to New York City on Feb. 17.