The art scene we have today in Denver is rooted in the late '70s and early '80s. That's when the first co-ops were founded and a generation of galleries began coming on line, with a crowd of artists emerging to fill those places; the first First Friday celebrations even date to that era. Many of the people intrinsic to establishing the scene are still around, but a few who died prematurely have been all but forgotten. John Haeseler Revisited, at Z|Art Dept., resurrected the reputation of one such once-lively force. The display of Haeseler's brightly colored, somewhat Warholian paintings was a definite stretch for Z, where the normal stock-in-trade is the quiet elegance conveyed by vintage abstraction. But it was great to once again experience Haeseler's work, which hadn't been exhibited for more than fifteen years, and to see how fresh and new it all still looked.