And Leno ? Jay Leno concludes 17 years as `` Tonight Show '' host Friday . Leno has been criticized for dumbing down the show , but he 's been No . 1 for years . Comment:
Jay Leno concludes 17 years as `` Tonight Show '' host Friday . Leno has been criticized for dumbing down the show , but he 's been No . 1 for years . Comment: