I think this TV film was first aired the same week that Manchester Utd played in the Champions League Final (1999), they run a lot of football related items that week and this one was an absolute standout.
It played on all the clichés that are churned out every season during the FA Cup ie, plucky underdogs, lucky clothing/mascots, name on the cup etc and turned out to be brilliantly funny.
I'm surprised it has never been repeated prior to other big football occasions, even now with the world cup just getting underway.
A few previous posts from non-football fans have said they still love it, but a football fan will find it hilarious imho.