Celtic v Rangers is renowned as one of the fiercest local derbies in world football and the two Glasgow giants have regularly produced matches to remember when going head-to-head in 'Old Firm' games.
The 1957 Scottish League Cup final was a memorable occasion as Celtic enjoyed a huge win over their local rivals, triumphing 7-1 at Hampden Park, with Billy McPhail scoring a famous hat-trick.
So iconic was the result at the time that the final was nicknamed 'Hampden in the Sun', and it's a phrase which has worked its way into terrace folklore for Bhoys fans, with a book documenting the game having also been published.
The race for the title between the big two in Scotland had gone right down to Celtic's last game of the season in 1979 and, early on, it appeared Rangers were going to triumph overall when they went in front.
The hosts needed to win to secure the Championship, but things got worse for the Hoops as Johnny Doyle was sent off just after half-time and the visitors, who still had two games to play after this one, were well in the driving seat.
However, Billy McNeill's men rallied superbly and goals from Roy Aitken and George McCluskey put them ahead before Bobby Russell equalised to give Gers fresh hope.
Then Colin Jackson's own goal and a late Murdo McLeod strike turned things back Celtic's way and the title was won in stunningly dramatic circumstances.
Celtic were on a high after their centenary double triumph the campaign before and their early-season joy was extended when Frank McAvennie fired the visitors in front after just two minutes to largely silence Ibrox.
Gers responded brilliantly, though, as first Ally McCoist levelled, then a Ray Wilkins screamer put Graeme Souness' team in front and further goals from McCoist, Kevin Drinkell and Mark Walters sealed the rout.
The win was the platform Rangers used to inspire them to go on and claim the Scottish Premier League title that season and it started a real period of Light Blue dominance north of the border too.
The 1988-89 success was the first of Rangers' famous record-equalling nine-in-a-row title wins.
After suffering catastrophic financial problems in 2012, Rangers were working their way back up the leagues following liquidation and were in the Championship when they were drawn against their local rivals in the Scottish Cup semi-finals in 2016.
In a thrilling last-four showdown, Gers were on target through Kenny Miller and Barrie McKay, while Celtic's scorers on the day were Erik Sviatchenko and Tom Rogic as the tie went to extra-time and then penalties.
It took a dramatic shoot-out - the first-ever between the Old Firm rivals in a competitive game - to determine a winner, with Rangers celebrating when Rogic skied his spot-kick over.
Mark Warburton's side, however, went on to lose the final that year to Hibernian 3-2 at Hampden Park, but they were promoted back up to the top-flight as Championship winners.
In Brendan Rodgers' first season in charge of Celtic, there was an afternoon to remember at Parkhead when the Hoops humbled Rangers 5-1.
Moussa Dembele scored the first Old Firm league hat-trick in 50 years, while Scott Sinclair and Stuart Armstrong were also on target.
It was a thoroughly miserable occasion for the visitors, back in the top-flight for the first time in four years after their financial implosion, and they had Philip Senderos sent off with 15 minutes left to rub salt into the wounds.
Rodgers would go on to lead the Bhoys to the title that season, while Gers finished third behind Derek McInnes' Aberdeen.