Liverpool and Arsenal have played out some blockbuster games in recent years.
One of their most extraordinary games came on April 17, 2011.
In truth, the game was a drab affair for the majority of the 90 minutes. But the game well and truly burst into life in stoppage-time.
Arsenal were given a penalty in the 97th minute when Jay Spearing felled Cesc Fabregas inside the box.
The Gunners thought they had won it when Robin Van Persie scored the resulting spot-kick.
But there was still to be even more drama.
Liverpool went up the other end of the pitch and won a free-kick on the edge of the box.
Luis Suarez's effort was blocked but they were given a dubious penalty when Lucas Leiva went down under pressure from Emmanuel Eboue inside the box.
Dirk Kuyt made no mistake from 12 yards to earn Liverpool a dramatic draw. View the end of the game below. (Liverpool's penalty drama starts at 4:30).
It was the latest goal in Premier League history, a record that still stands today.
There was a heated exchange between the two managers, Kenny Dalglish and Arsene Wenger, on the touchline after the game.
The Frenchman went over to Dalglish and said it was not a penalty.
Liverpool's manager shut down Wenger emphatically.
"It's a penalty. P*** off!" Dalglish told Arsenal's boss, before telling him to 'f*** off.'
Wenger continued to complain in his post-match interview.
"I said to Dalglish it was not a penalty. That was all, you can check it on the TV," he said, per the Daily Mail.
"We conceded a penalty after 11 minutes, when the referee said there was eight minutes of injury time. I don't see where those three minutes came from.
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"Lucas stopped in front of Eboue. There was no intervention from Eboue. It was no penalty."
While Dalglish also played down the incident.
He said: "I don't want to repeat what was said. I don't know why a conversation between managers on the bench is of any relevance after a game like that."