I watched this last night and thought it was quite a useful programme. Much of it was about a family who usually spend £200/week on groceries and were feeling the pinch because of price rises - but they discovered that by buying seasonal food and cooking from scratch they could live off less than £50 week and eat much better.
The reaction of the mum when she found out how little her food had cost was brilliant. Because she didn't complain that it involves more effort (which it does - lets face it) but focussed on the money she might save - £7000 a year (or as she put it enough to buy a car).
I thought it was good as it was showing people how they might alleviate the problem of rising food prices - rather than just moaning about them.