"Starstruck" is reasonably well known by people who were around back in the day. It's pretty easy to find on DVD here. I saw it a couple times at the cinema earlier this year. "Heaven Help Us" was released in Australia as "Catholic Boys" and it is very underrated. "Hannie Caulder" is far from Raquel's greatest flick but it is an odd role for its star--I need to look at this one again. "WUSA" is top notch and highly obscure considering its huge cast. "Finzi-Continis" is one I have seen at the cinema a couple times. You may wish to consider "The Candidate" for your list--alas whenever people talk about this film, they seem to want to spoil the ending. I have "The Last of Sheila" on DVD and when I see it I shall let you know what I think, but I do know it's one of those critics-love-it-but-hardly-anyone-talks-about-it films.