Yeah, great EP and the antidote to The Astonishing.
If I'm not mistaken, Watchtower really started that proggy metal thing, while Fates Warning were still under major Maiden influence and Dream Theater just starting out.
Uh... and the singer, Alan Tecchio, was part of an obscure Metal band called Hades. I'd call their album "If At First You Don't Succeed" a classic.