BFI Southbank formerly known as NFT

When I studied in London, we hit up the National Film Theater weekly (now it looks way cooler and has a new name). Films shown here are usually old and hard to come by, making it a quite delightful, cultural experience. And it was cheaper than the normal cinemas.
If I lived in London, I would try and have a date with the new BFI Southbank at least once a month. {it would be more often if there weren't a bajillion other cool things to do in London}