Btw, don't ever let some idiot tell you that without vibrato one cannot define the pitch. I studied early music at Indiana University, and I just love to imagine somebody saying that amongst the comany I once kept. They'd be laughed right out of the building! I wish I knew what dipstick originated that comment, but I've had to put that to rest time and time again!
Vibrato is a natural effect of correct singing. The vocal chords just do it, and trying to eliminate it entirely pretty much means that you're just stiffening up the vocal folds. Like singing too low, during which you fatten up your folds, it eventually leads to damage. Know this, and beware the evil Nodes!
About the guy with the affected vibrato - it kinda sounds like the old ornament where you trill on the same note.
ciarili