What about things like The movie Star Wreck?
Did they get permission to use a lot of Trek stuff, and I think Babylon 5?
Parody is permitted under current copyright law.
See I don't get that. Parody is OK and it's OK to use Ship designs and costumes but if you make something semi serious you are screwed to the wall.
Having said that I do agree. If you are told to stop you should stop or face the consequences.
IIRC - 2 live crew went to court over "Ugly Woman" because it was set to "Pretty Woman" or sounded close to it.
The courts rewrote copyright law to protect parody under the fair-use clause.
Which is good as Weird Al makes his living doing just that.