Hard to think of just one so added a couple:
Best:
1) Brighton 2019
Stuck in the home end but managed to get into the City end to celebrate.
2) Blackburn 2000
Again in the home end, but surrounded by blues, and managed to sneak past the stewards onto the pitch to enjoy the celebrations.
3) West Ham 2007
Opening day under Sven, new team, new hope, boiling hot and goals by our two new signings.
Worst:
1) United 2010 League Cup Semi Final
like we would never beat them and being locked in while there tannoy system played United songs accentuated how frustrated it was to lose to them.
2) Liverpool 1996 league cup
4-0 defeat and like the vast majority of matches we looked completely clueless under Alan Ball
3) Notts County 1991 Fa Cup fifth round
Really though we had a chance of the Cup this year but an injury time goal knocked us out. The keeper pulled of one save after another to ram the taunts about his weight right back down our throat.