In all sports, there is nothing that can evoke the kind of crowd reaction like the sheer violence of a knockout.
Over the course of 150 or so UFC events, MMA fans have been treated to hundreds of tremendous knockouts since the promotion's debut nearly 18 years ago.
During the next few weeks, we will be taking a trip down memory lane and taking a look at the best knockout from every UFC event to date.
In the third offering, we will be looking back at UFC 21 through 30.
Andre Roberts had the chance to redeem himself for his pitiful performance against Gary Goodridge when he went up against Ron Waterman at UFC 21.
Things didn't start off all that well for Roberts. Waterman came out and landed some big punches and knees early that left Roberts' face a bloody mess.
After a stoppage in action to get checked out by the doctor, Roberts came out with a newfound sense of urgency. But his aggressiveness just led to getting hit more and more.
The tide finally changed when Roberts landed a left that put Waterman down. Waterman was able to fight his way back to his feet, only to be put down for good with another solid right hand from Roberts.
One takedown, one knee and two punches were all that it took for this fight to come to a violent ending.
The fight started with Brad Kohler shooting in for a double-leg takedown that put Judson down to the mat. However, Judson was able to fight his way back to his feet, even though he had to eat a knee and an uppercut in the process.
Then, before Judson could get himself into attack mode, Kohler landed a huge right hand that had Judson out before he could hit the mat.
The battle was long and drawn-out, but it still ended in spectacular fashion.
The fight was mostly forgettable, until there was about two minutes left in the final round. That's when Jackson landed a massive left hook that ended Yamamiya's night.
This battle between two fighters you have probably never heard of ended up being one fun scrap to watch.
The first two rounds saw Lance Gibson going for a couple of submission attempts and Jermaine Andre swinging for the knockout blow.
After the first two rounds it appeared that the winner of the third would walk away with the decision victory. But Gibson did not want to take that chance.
With less than two minutes remaining in the fight, Gibson secured a Thai clinch, pulled down Andre's head and landed a knee that put his opponent down face-first on the mat.
Yuki Kondo earns Knockout of the Event honors for UFC 27 by default.
Kondo's United States debut against Alexandre Dantas was, for the better part, a pretty good back-and-forth battle. The young Dantas really wanted to make a name for himself against the veteran Kondo, but it wasn't to be on that night.
Kondo clearly dominated the standup throughout the bout. Dantas was able to hold his own on the ground for a little while, but as the fight entered the third round, Kondo became too much for Dantas to handle.
About midway through the last round, Kondo landed a knee that sent Dantas to the mat. Kondo followed up with some punches before the referee stopped the bout.
Some of you may be too young to remember, but Jens Pulver was a beast back in the day.
At UFC 28, Pulver made his third appearance inside the Octagon against John Lewis.
Both fighters were dangerous strikers, but Pulver's striking was all the fans got to see. It took only two left hands and 15 seconds for Pulver to knock Lewis out.
After the final punch landed, Lewis entire body was trembling as he tried to no avail to get back on his feet.
Fabiano Iha, primarily known for his Brazilian jiu-jitsu, showed a bit of his striking prowess when he took on Daiju Takase at UFC 29.
Iha was quick to get the fight to the ground. After a brief scuffle on the mat, Iha landed a right hand that hurt Takase. Iha continued to throw the right hand until Takase turned his back and the referee stopped the fight.
At UFC 30, Tito Ortiz made the second defense of the light heavyweight title when he went up against Evan Tanner.
Tito wasted no time trying to get Tanner to the mat. Less than 30 seconds into the bout, Ortiz picked up Tanner and slammed him down to the mat, knocking Tanner out cold.
Ortiz followed up with a couple of punches to the chin of his limp opponent before the referee could step in to end the bout.