Board Thread:Episode Discussions/@comment-26037879-20170328065749/@comment-35622277-20170330014938

Fate/stay night: Unlimited Blade Works and Fate/zero. You should give those a watch.

You should ideally watch FSN: UBW first though, before you watch F/Z. This is because F/Z spoils a lot of UBW.

It's also good to keep in mind that since FSN is originally a visual novel with its 3 routes (Fate, UBW, Heaven's Feel) meant to be read in chronological order, there are some holes in the anime of UBW which were either explained in a previous route or will be explained in its last route.

When you finish UBW I suggest you hop on over to the Type-moon wiki, to read about the other routes if you want full understanding of its complex storyline. Then watch Fate/zero, which is the prequel.