A lot of people are excited that Jimmy Fallon is stepping in to host The Tonight Show on NBC. But that doesn't mean that Jay Leno isn't leaving behind a legacy. Like with any long relationship, there are going to be ups and downs. NBC and Leno have had their ups and downs, but Leno genuinely seems grateful and extremely loyal to his staff. 

Here is his teary, emotional, final sign off. 

The entire show wasn't all heavy and emotional. He kicked the show off in typical Leno fashion after an extended standing ovation.