I was going to start a thread on this and then found to my delight that Calla already had.
I saw this prog by accident and I'm so glad I watched. Found it thoroughly fascinating (but I guess if you took any road or street - most peeps living there would be vastly different in terms of background, interests, history etc). Some very uplifting and some very thought provoking and sombre moments. I did find the end upsetting though. It may be how this programme was edited but it did seem as though if you had a problem (i.e. illness, age etc) you had less help. It looked as though it depended on how "acceptable" you were as to whether you had any help at all. Maybe this was wrong - i don't know - but that's how it seemed to me. The very nice middle aged professional man who had a lovely wife and 2 sons and who sadly had a terminal illness had help from neighbours (quite rightly) whereas the lad who had OCD/Tourettes, the chap who had schizophrenia and the elderly gentleman had no-one helping them or looking out for them.
One thing I did find completely baffling is that everywhere I've lived I've always known my neighbours and couldn't imagine life NOT knowing them - even if it's just to say "Hello". To me it seems really really bizarre and strange NOT to know who you live next to or opposite or next door but one to. I don't know if this is because I've always lived in "friendly" places. I don't want to annoy anyone but many friends/family of mine who have lived in London have nearly all moved moved back home as they found where they lived cold and impersonal. I can't imagine that all places in London are like this (in fact i know they're not as my OH's sister lives in London but she's very much part of the Asian community there) but sadly this prog did nothing much to negate any of my friends/family's experiences - it (with one exception) just confirmed what they'd said.