al jarnow creates many things. he did a bunch of films in the 70's mostly time delays and cool shapes. he also makes fun kaleidoscope programs, art machines and pattern makers >> here and has en-massed a huge collection of interactive works >> here
he also recieved a national science foundation artist-in-residence fellowship at the sanfrancisco exploratorium in the 80's and has since created many interactive art/science things.
just so you know the exploratorium in san fransisco is the funnest place in the world,