Perhaps the most famous derby moment, as United great Denis Law (pictured), playing for City in the twilight of his career, played a pivotal role in his old club's relegation to the Second Division. United needed to beat City at Old Trafford to have any chance of avoiding the drop but Law condemned them to defeat with a neat back-heeled goal. Law was only doing his professional duty, but the look of despair on his face told the story of a man torn.
Getty ImagesAlex Livesey
2011: Rooney's amazing bicycle kick
Wayne Rooney scored one of the greatest goals of his career with a stunning bicycle kick winner at Old Trafford. The score was 1-1 when the England striker, with his back to goal about 10 yards out, leapt to meet a Nani cross and hooked it over his head and into the net.
AFP/Getty ImagesANDREW YATES
2011: Always him
The morning of the 2011-12 derby at Old Trafford began with controversy magnet Mario Balotelli in the headlines after a fire at his house, caused by fireworks being set off in his bathroom. Typically he remained the centre of attention, scoring twice in a remarkable 6-1 City win, lifting his shirt after his first goal to reveal a T shirt bearing the words 'Why Always Me?'.
Man Utd via Getty ImagesMatthew Peters
2012: Title swings City's way
The second derby of the 2011-12 season was pivotal in the title race. With just three games remaining, City trailed leaders United by three points. Up stepped captain Vincent Kompany to head City to a vital 1-0 win amid high tension at the Etihad Stadium. It gave City the initiative and they went on to win the title on goal difference.
AFP/Getty ImagesPAUL ELLIS
2012: Van Persie's late drama
United regained the title from City in 2012-13, and in the final reckoning their last-gasp win at Eastlands in December proved decisive. City had battled back from 2-0 down to secure what seemed like a draw with four minutes remaning. But Robin van Persie had the final say, firing a deflected free-kick through a flimsy wall to snatch victory.
Getty ImagesClive Mason
2009: Former Liverpool hero wins derby
Given his past brilliance for Liverpool, Michael Owen seemed an unlikely fit for United when he arrived at Old Trafford in 2009. His three years at United were largely frustrating and dogged by injuries, but he etched his name into club folklore with a dramatic injury-time winner against City. Craig Bellamy looked to have snatched a 3-3 draw but Owen had the final say in a compelling clash when he struck deep into stoppage time.
Getty ImagesAlex Livesey
1989: Ferguson humbled
City suffered plenty of humiliating defeats at the hands of United under Alex Ferguson's reign, but the Scot said his most embarrassing moment came when his men were thrashed 5-1 by the Blues in September 1989. David Oldfield scored twice as City piled the pressure on Ferguson in what was a rocky spell before he landed his first trophy.
Getty ImagesBen Radford
2001: Keane-Haaland controversy
An incident that returned to the headlines recently following the publication of Roy Keane's latest autobiography. Keane, the formidable United enforcer, had a long-running feud with City's Alf-Inge Haaland dating back to the Norwegian's time with Leeds. It culminated with Keane injuring Haaland with an horrific tackle, for which he was sent off. Keane later admitted the tackle was premeditated, an act of revenge for past incidents, and was banned.
Getty ImagesGary M. Prior
1993: Cantona and Keane stage fightback
Keane enjoyed a more noteworthy derby when he rammed home a winner to complete a superb United comeback in November 1993. City led 2-0 following two Niall Quinn headers but Eric Cantona struck twice to level before Keane had the final say.
Getty ImagesClive Brunskill
1971: Honors even
One of the classics in terms of all-round action saw the sides draw 3-3 at Maine Road in November 1971. A United side containing Sir Bobby Charlton and George Best (pictured) led 2-0 and 3-2 before City hit back at the death. Goals from debutant Sammy McIlroy and Brian Kidd put United in command and John Ashton netted a third via a deflection after City leveled with a controversially-awarded Francis Lee penalty and a brilliantly-taken Colin Bell effort. Mike Summerbee made it 3-3 in the 89th minute.