What's the oldest show you've watched?
Galaxy Express and original Captain Harlock TV series
It really depends what you mean by show. The earliest animated footage from Japan I have seen is Katsudo Shashin from 1907? Animated shorts all through the 1920s-10940s seen plenty of. Then Toei films from 1958-1970 seen most of. The earliest full series probably Ashita no Joe from 1970. It is hard to find anything fully translated earlier than that and its all mostly dubs.
Kurt the dog, Heidi, Maja, some bitch in an orphanage, some boring family drama in the industrial age, robin hood, peter pan etc.
There was lots of anime in german television in the early 90ies/late 80ies.
I've seen older stuff like the original Astro Boy since but anyone can do that
I didn't enjoy it very much.
Pet Shop of Horrors. It sure was... something.
Show? I guess the first Lupin III series from 1971. I have seen some episodes of older series from the 60s, and I've seen some shorts from the 20s and 30s.And as far as full length films go, Gulliver's Space Travels from 1965 is the oldest anime film I've seen.