Supporters of Manchester United and Arsenal have strong feelings about the October 2004 meeting which saw the Invincibles lose their unbeaten run.
The start of the 2004-05 season saw the last two Premier League champions pitted against one another, with Arsene Wenger's Gunners picking up where they left off after going an entire season without losing a game in the competition. A heated contest seemed inevitable, though, after the previous season had seen late drama around a missed penalty from Ruud van Nistelrooy.
As we all know now, United prevented Arsenal bringing up 50 games unbeaten, and they did so in controversial circumstances. The on-field events don't tell the whole story, though.