Katie Couric's Notebook: Leno

(AP Photo/David Kohl, file)
It took a guy with a big chin to fill some pretty big shoes.

When Jay Leno took over the Tonight Show in 1992, he was replacing one of the most beloved television icons of the 20th Century: Johnny Carson.

And he was met with skepticism.

One critic wrote that The Tonight Show had "passed from the hands of a showman into those of a mere comedian."

Well 17 years later, that comedian is the second-longest-serving host of the show, and has held first place for more than a decade. Most of us just call the show "Leno."

Tonight, he says goodbye to the gig he calls "the most wonderful job ever in show business."

In true Jay style, he won't be resting on his laurels. He's on a stand-up tour this summer and begins a new primetime show in the fall.

He's come a long way from doing commercials for Doritos - but despite his wealth and massive car collection, he's remained a Regular Joe and a good friend. Best of luck, Jay.

That's a page from my notebook.