With the drama of the The Ultimate Fighter 18 beginning to crank up, fans of the show can't help but reminisce on the studs who've used it as a launching pad and the duds who've failed to make a mark in the UFC.
In September 2007, then-UFC welterweight champ Matt Serra coached against former champ Matt Hughes in the sixth season of the celebrated reality franchise.
Serra infamously earned a title shot and landed his position opposite Hughes by winning The Ultimate Fighter 4: The Comeback.
Of the 16 welterweights who took to the TUF house vying for a multi-fight contract, only a handful became UFC mainstays, and only one has a winning record with the company.
As a part of Bleacher Report's weekly remembrance of the show, here's a glimpse at the cast of The Ultimate Fighter 6: Team Hughes vs. Team Serra.
Joe Scarola got on the show thanks to a reluctant endorsement from mentor Matt Serra, but the New York native didn't make the most of his time.
Mac Danzig submitted him with a first-round triangle choke in the first fight of the season. Soon after and against Serra's wishes, he packed his bags and took off prematurely.
He hasn't fought professionally since and is assumed to be inactive. He teaches Brazilian jiu-jitsu at a Gracie Barra gym in Long Island, NY.
California native Billy Miles didn't fare much better than Scarola, getting submitted in the first round of an elimination-round bout. John Kolosci finished a guillotine choke on Miles at the 2:56 mark of the opening round to end his brief time as a competitor in the house.
In the second episode of the season, Matt Arroyo quickly took the back of Dorian Price and then submitted the 6'3" Jorge Gurgel product with a rear-naked choke at 1:48 of the first round.
Price fought in The Ultimate Fighter 6 Finale but lost via Achilles lock just 23 seconds into the bout against Roman Mitichyan.
In his most recent bout, Price lost via first-round submission to Ryan Bigler at Pacific Xtreme Combat 29. His MMA record is 8-5.
Like the first three cast members on this list, Paul Georgieff failed to make it out of the first round in his elimination-round match.
Troy Mandaloniz scored a KO of Georgieff just 2:39 into their bout to end the Minnesota native's short stint as a competitor on the show.
In his last pro fight, Georgieff lost via first-round submission to Jonathan Goulet at The Ultimate Fighter 6 Finale.
Richie Hightower quickly disposed of Blake Bowman in their elimination-round bout by scoring a TKO in just 49 seconds.
Bowman then won his first two pro fights after his stint on the show before losing five straight, with four by knockout and another by submission.
In his latest outing, Daniel Golightly TKO'd him in the second round at Fight Time 9: MMA Explosion. His MMA record is 2-5.
Jared Rollins foolishly engaged in a slugfest with George Sotiropoulos in their elimination-round bout. The ill-fated decision left him TKO'd on the canvas just 3:48 into the fight.
He got another chance at The Ultimate Fighter 6 Finale, but "J-Roc" got clipped and TKO'd in another brawl against War Machine in his last pro bout.
War Machine, formerly known as Jon Koppenhaver, opened a cut on the eye of eventual tournament runner-up Tommy Speer in their elimination-round bout. He then locked up a rear-naked choke that an extraordinarily bloody Speer narrowly escaped. A resilient Speer clawed back and eventually used his wrestling to grind out a unanimous decision over War Machine.
War Machine went on a tumultuous ride following his time in the TUF house. He first defeated Jared Rollins at The Ultimate Fighter 6 Finale before getting choked unconscious by Yoshiyuki Yoshida at UFC 84.
Spending long stretches of time in jail and enduring an array of personal problems didn't stop War Machine from winning nine of his next 11 bouts.
He is currently riding a three-fight winning streak, which includes a third-round TKO win over Roger Huerta at Ultimate Warrior Fighting 1. He next fights Ryan Kelsar at Bellator 104 on October 18. His MMA record is 14-4.
Both of Dan Barrera's most pertinent career fights came against Ben Saunders.
Saunders first dealt him a majority-decision loss in their elimination-round bout on The Ultimate Fighter 6. At The Ultimate Fighter 6 Finale, Barrera lost again to Saunders, this time by unanimous decision.
Barrera went on to win three straight fights on the regional circuit, two of which took place in Kentucky, before becoming inactive in late 2010.
After submitting Billy Miles in the first round in an elimination-round bout, John Kolosci lasted just 3:55 with eventual season winner Mac Danzig in their quarterfinal-round fight.
Danzig eventually took Kolosci's back and sunk in a fight-ending rear-naked choke to advance to the semifinals.
Kolosci got submitted in the first round against Matt Arroyo at The Ultimate Fighter 6 Finale. The Indiana native then won seven of his next 11 fights before becoming inactive in 2012.
Troy Mandaloniz may have looked sharp in his KO win against Paul Georgieff, but the Hawaiian couldn't match that performance in the quarterfinals.
Matt Arroyo outclassed him on the ground by Matt Arroyo, submitting "Rude Boy" with an armbar in 1:06 to move on to the semifinals.
Mandaloniz TKO'd Richie Hightower late in the first round at The Ultimate Fighter 6 Finale. In his last bout to date, he lost via unanimous decision to Paul Kelly at UFC 95 in 2009.
Richie Hightower won his elimination-round fight via TKO over Blake Bowman but couldn't get past superior grappler George Sotiropoulos in the quarterfinals.
Sotiropoulos eventually snatched a kimura and used it to finish Hightower at the 4:06 mark of the quarterfinals to move onto the semifinals.
Hightower won just one fight following his TKO loss to Troy Mandaloniz at The Ultimate Fighter 6 Finale. He became inactive in mid-2010.
One of the most accomplished cast members from TUF 6, Ben Saunders notched a decision over Dan Barrera in his elimination-round bout before dropping a decision to Tommy Speer in the quarterfinals.
Saunders beat Barrera by decision again at The Ultimate Fighter Season 6 Finale. He then received his walking papers after going 3-3 in the UFC.
"Killa B" signed with Bellator MMA in 2011 and has since racked up a 7-3 record with the promotion.
Matt Arroyo looked impressive in submitting Dorian Price and Troy Mandaloniz during TUF 6.
However, he suffered a rib injury while training for his semifinal-round bout with Mac Danzig and decided to pull out of the fight.
He later submitted John Kolosci in the first round at The Ultimate Fighter 6 Finale. He then lost back-to-back fights in the UFC to Matt Brown and Dan Cramer in what were his last two pro bouts.
Undoubtedly the most successful cast member following his time on TUF 6, George Sotiropoulos knocked out Jared Rollins and then submitted Richie Hightower to advance to the semifinals.
But he got cut down and knocked out in the first stanza of his semifinal-round bout by eventual runner-up Tommy Speer.
He dusted off Billy Miles in just 1:36 at The Ultimate Fighter 6 Finale before winning his next six bouts in the UFC.
His six-fight winning streak culminated with a second-round submission win over Joe Lauzon (kimura) at UFC 123.
The Australian, who sports a 7-3 mark in the UFC, has since lost three straight. He coached opposite Ross Pearson on The Ultimate Fighter: The Smashes in 2012. When the coaches met at UFC on FX 6, Pearson won via TKO.
He meets KJ Noons at UFC 166 on Saturday.
Minnesota native Tommy Speer scored back-to-back grinding decisions over War Machine and Ben Saunders in his first two bouts on TUF 6 to reach the semifinals.
Speer then shocked George Sotiropoulos by knocking the submission ace out just 2:57 into their semifinal-round fight to reach the finals.
At The Ultimate Fighter 6 Finale, he quickly gave up his back to Mac Danzig. Seconds later, Danzig cinched up a fight-ending rear-naked choke at 2:01 of the first round to become the Season 6 winner.
In his next and final bout with the promotion, Anthony Johnson knocked him out in 51 seconds at UFC Fight Night 13.
Speer retired in 2008 but has since returned to pro fighting, winning seven of his last 10 fights. His MMA record is 20-7.
Wisely maintaining a business-like approach throughout the season, Mac Danzig steamrolled the competition during his time on TUF 6.
He secured first-round submissions over Joe Scarola, John Kolosci (twice) and Tommy Speer en route to being named the winner.
In his time since, however, he has experienced only checkered success, going 4-7 in the UFC's lightweight division.
But UFC president Dana White has accepted Danzig as an entertaining fighter who can maintain a career in the business despite his mediocre record
After all, Danzig's lone winning streak in the UFC came in his first two bouts against Speer and Mark Bocek. He next meets Joe Lauzon at UFC on Fox 9 in December.