Original discussion supported the idea that media tags are bad in general, but there might be some specific uses for some of them.
However, tv, and its synonym, tv-series, appear to have been used to mean everything from "I'm only interested in answers relating to this title on TV (i.e. no answers from books/movies/comics)" to "I once saw this movie on TV" to "I have a question about something that is on TV, but I'm also interested in answers that come from books/movies/video games/comics".
I suggest we remove tv from any question that is clearly not using that tag to exclude other media (i.e. any question that clearly is open to answers from other media, including movies shown on TV; any question that is on a title where TV is already implicit, such as Babylon-5; or where a tag to exclude non-tv sources would simply not make sense).
Per a suggestion from Keen, I'd like to first compile a list of all questions we think should be cleaned up. Please feel free to add to this list as you see fit.