What are the chances that in the distant future, the archaeologist will unearth some old transcripts of a show or movie and thinks it's a historical record?
For example, "Char's Counterattack" being taught as a historical event in classes because they thought that it actually happened in the distant past. They'll probably rationalize the existance of giant fighting robots by saying that the technology downgraded or something (how the pyramids are built?).
If something like that happens, what show do you think will be mistaken as a historical event?