This is one of the most entertaining screensavers I've come across.

Watch a castaway Johnny perform amusing antics while he struggles for daily survival on a tiny island. The program has numerous scripts that are randomized every time, and special skits for special days such as Christmas and New Year's Eve. Watching Johnny is always fun, interesting, and definitely more fun than playing an average game :) Sometime in 1995, Sierra released the program as freeware, to cheers of Johnny's fans worldwide :)