VIDEO! This evening is the final Tonight Show with Jay Leno. When Leno started, there was no YouTube nor Hulu. But Leno’s goodbye to the Tonight Show this evening could give Susan Boyle a run for title of  biggest viral video of 2009.

Initial promo clips of tonight’s show have been featured on NBC 4 LA this afternoon featuring the interview exchange between Jay Leno and Conan O’Brien. O’Brien, who has been on the show 17 times, laughs about Leno’s big feet, being told all week long about the “big shoes” he has to fill in taking over the Tonight Show.

But unlike the Leno O’Brien exchange, a reported montage of Leno’s greatest moments is expected to be the highlight of the night. Guests this week have already included Arnold Schwarzenegger, Mel Gibson and Billy Crystal.

O’Brien starts as Tonight Show host this Monday June 1.

VIDEO 1 - Jay Leno’s Legacy Video Clip - Final Tonight Show

VIDEO 2 - Big Shoes to Fill Video Clip

For all the remaining Tonight Show finale show video clips, click here