ASCIIQuarium, a perl-script by Robobunny with graphics mostly by Joan Stark. There are screensaver versions for OSX and Win. GIF made from this video by Mewbies.
Totem Pole by Joan Stark, July 1997.
Carousel horse by Joan Stark (jgs), 1998.
ASCII lightnings by Michele Cerulli (MC), Joan Stark (jgs), Dave Bird and unknown. From retrojunkie (broken, un-archived link).