A nice extension of this technique is to use it to play chords - hold the chord down with your left had as normal, but pick the notes individually using this artificial harmonic technique.
If you want to hear some of this - on my web-site, listen to the beginning of 'Drifting' the chiming notes on the intro chords are artificial harmonics. Then check out 'The Virtue Of The Small' the solo that sounds like a squealing guitar is just a four string bass through an SWR interstellar overdrive, using artificial harmonics to go about two octaves beyond the range of a bass...
cheers
Steve
http://www.steve-lawson.co.uk