FORD: Hey, weird.
P.A. VOICE: We are currently awaiting the loading of our compliment of small, lemon-soaked paper napkins for your comfort, refreshment, and hygiene during the flight, which will be of two hours duration. Meanwhile we thank you for your patience. The cabin crew will shortly be serving coffee and biscuits… again.
FORD: Zaphod! How long has this ship been standing here?
ZAPHOD: Man, there’s a departure board right behind us and I’ve been looking at the flight schedules. Man this ship is late, man this ship is very, very late! Man this ship is over nine-hundred years late.
- Hitchhikers' Guide to the Galaxy, Douglas Adams
They also made the pretty good (and of course prematurely cancelled) 2014 mini series "Ascension" out of a very similar plot. Admittedly, although it stars absolutely top notch, it goes a bit downhill afterwards, but they could have saved it very easily instead of taking the easiest path. I wonder why aren't there incentives to prevent premature cancellations when the public likes the material? It seems they're eager to kill even profitable series if starting a new one from scratch brings more money, which seems logical, however, besides angering viewers, that way the cancelled series loses appeal and value also as a later DVD edition product.
Update: found it: https://en.wikipedia.org/wiki/Gridlock_(Doctor_Who)
Similarly, there's the the TV series Noisnecsa (reverse the letters) where it starts out with the premise that they've going through space on such an inter-generational voyage, in a massive, self-sustaining ship. Then later there's a reveal that it's just experimental and stayed on the ground the whole time, with mission control monitoring them and periodically communicating.
(It was described as a hybrid of Mad Men and Battlestar Galactica.)
Wish I could remember the author and title, it's been sticking with me ever since.
Edit: Thanks to u/zem's hint, it's Taklamakan by Bruce Sterling, featured in Asimov's October 1998.
Edit: Awesome! It's Taklamakan by Bruce Sterling
I actually enjoyed that.
2080: https://querschnitt.tumblr.com/
https://www.hoerspielprojekt.de/genre/science-fiction/
https://timeshift.blackdays.de/
https://www.serotonin-audio.de/
https://www.gratis-hoerspiele.de/alle-kostenlosen-science-fi...
there is also a 20GB torrent with lots of 1-hour german radio episodes. you can find it under the name: "german_audiobooks_radio-science-fiction". there are more of those on youtube.
and for star trek fans there is the german series eberswalde. http://www.raumschiff-eberswalde.com/
there is of course 10 times more in english...