But there's a lot that took place in between when Brian was snorting cocaine ahead of live shows and humbly transporting strangers to their destinations, and it'll all be unpacked in the upcoming documentary, titled Dunkleman.

Dunkleman tells the heartbreaking, funny and fascinating story of the man who went from being an unknown stand-up comedian, to co-hosting the biggest show in the history of modern television, to losing it all – seemingly overnight.

Brian gives a first-hand account of the backstage fights, toxic work environment and production nightmares he says he experienced while sharing the Idol stage with Ryan, who still stands there – and so many other lucrative places – today.

Drugs, alcohol and a downward spiral of depression accompanied Brian's downfall from idol to outcast – a reality that he comes to terms with in Dunkleman.

The over-3-minute-trailer for the documentary features out-of-context soundbites of Brian standing in front of a black curtain while pulling back the curtain on behind-the-scenes Idol drama, his alcohol and drug use, suicidal thoughts, his divorce from his allegedly alcoholic ex-wife, and the struggles of taking care of their son.

"Dunkleman. Say it. Kinda fun, huh? Not ringing a bell? Google my name. God, I wish I never had. Make sure you spell it right. After about 140,000 hits or so, you will begin to understand my notoriety that, yes, in 2002, I hosted the No. 1 show in the history of modern television. And after 25 episodes, I quit. Or did I? Sometimes, I can't remember."

"A lot of you said it was the dumbest f--king move of all time. So how did I end up landing the most sought-after job in the entire business at the time and then let it all slip away? The answer may surprise you. We'll find out, right after the break!"