Filling the entire first-floor gallery of the Arvada Center, "Looking Back/Looking Forward" is a retrospective of pre-eminent Colorado contemporary artist Dave Yust. Renowned for working with circles, the Colorado State University painting professor's oeuvre, subtitled "Explorations in Symmetry and Inclusion 1970-2008," isn't on display for much longer. Mon-Fri 9 a.m.-6 p.m.; Sat 9 a.m.-5 p.m.; Sun 1-5 p.m Arvada Center for the Arts and Humanities, 6901 Wadsworth Blvd. Free, 720-898-7200, official website