The two fierce East Midlands rivals will go head-to-head in the Championship on Saturday.
Forest are in serious relegation danger while Derby's play-off hopes have now gone, and both clubs are set to hire new managers in Mark Warburton, according to the Telegraph, and Gary Rowett, also according to the Telegraph, respectively, to reignite their seasons.
With no shortage of drama, the fixture has yielded some classic encounters over the years - here are six of the best.
Nottingham Forest 2-3 Derby County, 4/2/2009, FA Cup
One more for Derby fans than Forest, as the Rams staged an incredible comeback to defeat their East Midlands rivals. Goals from Chris Cohen and Nathan Tyson gave the Reds a 2-0 lead at half time, but Rob Hulse and Paul Green both scored headers to tie the match, allowing former Forest man Kris Commons - who swapped The City Ground for Pride Park in controversial fashion - to score the winner for Derby.
Nottingham Forest 3-2 Derby County, 29/8/2009, Championship
It wasn't long until Forest got their revenge however, as they set about making their intentions clear for the 2009/10 season, which they'd ultimately finish third. Radoslaw Majewski fired in an unbelievable opening goal, before an own goal from Hulse and a Tyson strike before half time seemingly put the game to bed. However, Derby had other ideas, and a Wes Morgan own goal and a Jake Livermore strike led to a nervy end for Forest fans. After the game, Tyson grabbed a corner flag with a Forest emblem on and ran in front of the Derby fans with it, causing a post-match fracas on the pitch.
Derby's Kris Commons (L) and Nottingham Forest's Guy Moussi in action
Nottingham Forest 1-2 Derby County, 17/02/2011, Championship
The game that Derby fans would gleefully refer to as '10 men day', at least until the 2014 play-off final. It looked set to be Forest's day after Rams keeper Frank Fielding was shown a straight red card for wiping out Matt Derbyshire in the box last man, and Andy Reid coolly converted the resulting penalty. However, despite Cohen going down with a serious injury, Jamie Ward refused to kick the ball out and instead scored an equaliser, before a Jeff Hendrick stunner sealed the turnaround for the Rams.
Nottingham Forest 5-2 Derby County, 29/12/2010, Championship
It's hard to think now, but this emphatic victory saw Nottingham Forest go the whole calendar year of 2010 unbeaten at home in the league. Within two minutes, Luke Chambers scored from a header for Forest, but Luke Moore equalised for the Rams. Moore's goal would be a false dawn however, as former Ram Marcus Tudgay scored a brace before half-time to make it 3-1 to the Reds. Another former Ram in Robert Earnshaw made it 4-1, before ex Forest player Commons struck to make it 4-2. Earnshaw had the last laugh however, and scored the fifth in the 93rd minute
Nottingham Forest's Michael Dawson tackles Derby County's Marcus Tudgay
Derby County 5-0 Nottingham Forest, 22/03/2014, Championship
Both teams were in the top six before the fixture took place, but afterwards only one remained, and then Forest boss Billy Davies also lost his job in the aftermath. An injury ravaged Forest were ripped limb from limb by a rampant Derby, who equalled their record winning win against the Reds. Craig Bryson opened the scoring after just six minutes, before doubling the lead on 32. Five minutes later, Hendrick had made it 3-0, and after half-time, the Rams showed no sign of slowing up. Johnny Russell scored an excellent fourth, before Karl Darlow gave a penalty away - which Bryson converted to seal his hattrick.
Derby County 1-2 Nottingham Forest, 17/01/2015, Championship
Every fan in the entire country thought Derby would steamroller Forest and maybe even eclipse the 5-0, with the Reds' then manager Stuart Pearce on the brink following a truly abysmal run of form - with an even worse style of play - while Steve McClaren's Rams were seriously challenging a promotion spot. The goal glut never came, but things still went according to script for Derby when Henri Lansbury scored an unfortunate own goal in the first half. However, in the second half the Rams began to lose their way, and when Britt Assombalonga equalised, the momentum was with Forest. This proved in the 92nd minute, when former Derby academy member Ben Osborn ran with the ball unchallenged, before striking a fierce shot into the bottom corner to score his first career goal.