I mentioned this in another topic, but the Whitechapel Arts Gallery has an exhibition that finishes in a few days that is simply excellent. It fetaures art, style and cinema from the UK, Jamaica and the US from the early 1970s.
http://www.whitechapel.org/content.php?page_id=1250
It's free (but I happily donated on exit). If you're in London and have an hour spare, go along to whitechapel and give it a go...
Lot's of reminders of my youth, especially the photos from the 1970s...