Okay this one is a bit silly, but I think Nitro, for what they were, should've been huge in the hair metal days - they waste Poison, Warrant etc...
4 necked guitars and a singer with a 6 octave range? I can't believe I hadn't heard of them until last year.
And now the 100th time I've posted a link to their Freight Train video...
http://www.youtube.com/watch?v=c35FZf3Jom4