The description gives you the basic idea, what it doesn't tell you is that this gem is written by Andrew Marshall and David Renwick. Creators of One Foot in the Grave, 2 Point 4 Children, Johnathan Creek, Alexei Sayle's Stuff, Whoops Apocolypse and countless other classic comedy moments.
The cast give a strong performance with only one miss-hit, Paul Merton never looks comfortable when acting, but this is more than made up for by Richard Briers giving a perfect performance as Godfrey Spry, who, after an accident ends up with an attention span of 30 seconds, meaning he believes everything that he sees in adverts.
It is a comment on advertising and commercialism, with a dark look at how we are lied to in the modern society. But above all of that it is very funny.
Alongside the story of Godfrey Spry you have Adrian Edmonson trying to cope with Godfrey and with the annoyances of life in general. You can clearly see Victor Meldew's character here as he battles with insurance companies and trying to get hold of his new sofa which has immediate delivery (in 6 to 8 weeks).
I can't recommend this enough. The adverts that get paradied are long gone but the humour and message behind it is still just as relvent now.