There are lots of new tv shows to watch, too many to keep up. But we still manage to get some old shows in our viewing schedule. Right now we are watching the old BBC SF show Blake's 7, which aired in 1979/up to the early 1980s. I was a kid, but I remember a lot of it. Pretty good still, even if the show is just a little dated.
I also got my guy to watch another sf show from 1999-to early 2000s: Farscape. There are some overlapping themes between Blake's 7 and Farscape. And it is fun to find them. Basically, I had to really push Farscape because somehow it was not seen as interesting enough because they used puppets. But it works and the episodes are fantastic and fun. I'd recommend that show to anyone who likes science fiction.
Any surprising older series or films you'd recommend?