The Windy City held its collective breath for WWE.com's No. 14 Greatest Moment in Raw History, when the "Countdown to the Millennium" clock ticked down to zero on Aug. 9, 1999.

Colored lights flooded the United Center, and then went dark. The Rock, who was in the ring at the time, was transfixed along with the rest of the arena, partly because he was annoyed that someone would dare interrupt his address to our fans.

An explosion of pyro revealed one name in 20-foot-high letters across the TitanTron that brought the arena to its feet. 

"JERICHO."

Loyal fans knew of Chris Jericho from his exploits in WCW. The charismatic, world-renowned newcomer stood on stage, soaking in the roars of the Chi-Town crowd as an unimpressed Rock fumed.  

"Welcome to Raw … is … Jericho," the brash new Superstar boasted. "For those who don't know me, I am Chris Jericho, your new hero, your party host, and most importantly, the most charismatic showman to ever enter your living rooms via a television screen."

The cocky, yet confident Jericho vowed he would save WWE from the boring and mundane, touting himself as the "Y2J problem" -- a play on the "Y2K" computer bug that struck fear in programmers as the year 2000 approached.

Raw's millennium man would, in fact, change WWE, as Y2J would go on to become the first-ever Undisputed Champion in history when he defeated both The Rock and "Stone Cold" Steve Austin in one night in December 2001.

But he set the tone for his WWE career in one of the greatest moments in Raw's history.