It all started when NBC told Jay Leno he was going to retire... again.

For decades, some of the most talked about feuds in show business have resulted from the lengthy star-studded list of notable entertainers vying for the most famous desk job in all of television.

Now, perhaps the greatest saga of them all has begun... and it looks surprisingly familiar to a late night nightmare we all endured just a few short years ago.

"Jimmy Fallon: Inside His Fight for Late Night at NBC" is a compelling and completely unauthorized inside story of NBC's plan to replace Jay Leno with Jimmy Fallon as host of The Tonight Show in 2014.

Although NBC wants late night fans to believe that Fallon is firmly in place to succeed Leno and ensure a promising future for late night television programming at NBC, both history and the latest facts in this debacle-in-the-making suggest that all hell could soon break loose in late night... again.

And it may very well be worse than last time.