Loved the first 6 series, 7 was ok, 8 was simply terrible. Back on Earth however wasn't as bad as I expected, haven't really looked into the new series yet.
^Dambusters is certainly a fantastic film.
For me I think possibly something like IF.... or its follow up O Lucky Man would be my favourite. Though I do also love a lot of the Hammer films; The Nanny, Devil Rides Again...
amongst some of the previous mention like A Boy and His Dog and Tampopo, I 'd say films such as; True Stories, Hana Bi, King of Marvin Gardens, Eating Raoul and countless others.