I was (briefly) part of a BBS "movie" group that made movies using "Commodore 64 Graphics" which were actually just made using the C64's unique character set. It would record back every cursor movement and character change, so you could make a really cheesy animation that often turned out to be really fun to watch.
You'd actually have to add delays by moving the cursor to allow enough time to read the captions/speech bubbles. It was pretty funny because it would be much slower on a 300 baud modem vs. a 2400 baud, so you had to be careful how you tuned your delays.