I have:
1990 - Colm Wilkinson (3-track demo)
1990 - Colm Wilkinson
1994 - Anthony Warlow
1997 - Robert Cuccioli
1999 - Ethan Freeman
2001 - David Hasselhoff (video)
2001 - Raphael
2002 - Thomas Borchert
2003 - Takeshi Kaga (in the mail)
2005 - Werner Auer (in the mail)
2006 - Rob Evan
also, I'm might get the Spanish DVD with Paco Arrojo soon.

I'll have to update:
1987 - Chuck Wagner [Demo]
1990 - Colm Wilkinson [3 - track promo]
1990 - Colm Wilkinson
1994 - Anthony Warlow
1997 - Simon Burke [Demo]
1997 - Hans Peter Janssens [Demo]
1997 - Robert Cuccioli
1999 - Ethan Freeman
2000 - Carlos Marin [Demo]
2000 - Pedro Ruy Blas [Demo]
2001 - László Molnár
2001 - Rob Evan [Video]
2001 - David Hasselhoff [Video]
2001 - Raphael
2001 - Sergio Granados [Demo]
2002 - Luis Amando [Soundboard]
2002 - Thomas Borchert
2003 - Yngve Gasoy-romdal [Demo]
2003 - Takeshi Kaga
2004 - Cho Seung-woo
2004 - Cho Seung-woo [Video]
2005 - Werner Auer
2006 - Cho Seung-woo
2006 - Daniel Hulka
2006 - Rob Evan
2008 - Mikael Samuelson

P.S.
Juggler, please do not remove this post. I'm not talking about the selling or trading of illegal bootlegs.

Let's not have any talk of bootlegs at all, please.

Mentions of demos are a bit questionable as well, since it's unfair to those who don't have access to them (the silent majority). So let's not let that get out of hand either.

Thanks,
Peter