Many such films are on YouTube such as Bridge too Far. Obscure ones are also there an example being the comedy Very Important Person 1961 which is good for a laugh. Really though you have to go to torrenting. I can't post links but in the UK a lot of sites are blocked so I use a VPN browser called Epic. Pirate Bay is still great but you may still have to use a proxy site of Pirate Bay. Download torrents using µTorrent.