This past year, it seemed that Denver sculptor Chuck Parson was everywhere at once. His work was displayed at the Arvada Center, the Museum of Contemporary Art Denver, the Museum of Outdoor Art, the Gallery at Guiry's and in the sculpture court at Artyard. And that was just around here. Parson was also feted to a solo last fall at Wyoming's Nicolaysen Museum, and he created a large installation for Chicago's Pier Show earlier this summer. Even more astounding than his participation in so many art exhibits is the medium he prefers -- mammoth sculptures made of such minimally portable materials as concrete and steel beams, which would seem to discourage all that traveling. But the best thing about Parson's sculpture is not that it's so easy to find, but that it's so very good.