Comment PETSCII for me (Score 1) 10
Commodore BBS Sysop here, I wrote and ran The Dragon's Lair in Corpus Christi, and later Houston when I moved here for college. It originally ran on my VIC-20. I migrated my software to the C= 64 and C= 128 when I acquired those computers. We had PETSCII movies such as Teenage Mutant Ninja Turtles.
I also wrote MusicTerm, a custom terminal program that added features like 3-voice music, font control, sprite control, ability to play online games using your joystick, etc. If you're interested to learn more I blogged about it here, which includes a video of what a caller might experience.
A friend ran a BBS on his Atari so I added ATASCII support to my terminal program so I could call his BBS. The Atari BBS had ATASCII movies, such as Bruce Lee, which were similar to PETSCII movies just without color.