Liverpool 5-5 Arsenal with Liverpool winning 5-4 on penalties 
Crazy game. I cannot remember another game with a score of 5-5 in 90 minutes played.I cannot recall watching any 5-5 game in any league or cup match before but in the EPL I can remember watching a Newcastle 4-4 Arsenal crazy game several years ago.
The only other one I can remember was West Bromwich Albion 4-4 Manchester United, that was another crazy game with a young Romelu Lukaku scoring a hat-trick for West Brom against one of his future clubs Manchester United.