Did Elton John watch this before making Tantrums and Tiaras? Did Madonna see it before making 'In Bed with Madonna'? Have Metallica watched this before releasing `Metallica' (the black album)? Did U2 see this before visiting Graceland in Rattle and Hum? Have Velvet Revolver watched it before forming a band?
The humour throughout Spinal Tap is dry and observed rather than slapstick in your face and that is fine by me. Hissy fits about food, on stage pompous prop failure, the tuning of a violin used during a guitar solo, radio interference on stage, the constant replacement of drummers, getting lost on the way to the stage, the revival of the career in Japan, amplifiers that go to eleven, all the jokes and clichés are there, in fact I think this film may have invented a few.
In much the same way that the British TV series `Drop the Dead donkey' character Damien Day successfully lampooned cliché overly self important `on the spot' news reporters, to the point where I struggle to take these `news hounds' seriously, I find it hard to take most TV `Rockumentary' programmes seriously as a result of Spinal Tap. Musicians and producers talking to camera about their `work' just isn't the same.
Both influenced and influencing Spinal Tap is a work of comedy genius. Not many films have dialogue that enter the language, the phrase `its all a bit spinal tap' I have heard used in the media on countless occasions, and will be for years to come. There is little funnier in film or television when life imitates art, and art then imitates life to this degree. If we can see it, why can't they? All you need to enjoy this is a sense of humour.