Sometimes I forget just how charismatic and talented Norman Wisdom was. I was never a fan of slapstick humour, but somehow he always manages to inject the tiniest elements of class - even sophistication - into his performances. Here, he delivers one of his better and harder-working efforts as "Pitkin"; son of a decorated police officer who, it had been deemed, is too short to serve in the constabulary himself - so he gets a job cleaning their cars! Now cue for a fun water fight; the Commissioner gets soaked and he gets fired. Luckily for him, though, the police are under huge pressure to…