WHEN ERIC KUPERS and Kimiko Guthrie, right out of UC Santa Cruz, started collaborating in 1991, they were a couple. They're uncoupled now, but their artistic relationship continues in Dandelion Dancetheater. It's one in which their works intersect but also shoot off in completely different directions. Guthrie has refined her approach to dissecting how the commonplace shapes perceptions of ourselves and others: when two people do identical moves, what does that tell us about them? How much can we read in a single gesture, for example, a handshake? Kupers, for his part, has gone out into left field by examining identity through that most vulnerable aspect of our selves, the nude body: The Undressed Project digs into fundamental questions about how our physical selves relate to the rest of us. Dandelion's spring season is delivered in two parts. The evening starts at 7 p.m. with a double bill of world premieres. Guthrie's You is a sextet that looks at the connection between the memory and the reality of a relationship. Kupers's Octagon, a collaboration with musician Patrick Cress and painter Nancy Ostrovsky, balances between improvisation and composition in looking at obsession. For Coital Canvas II, which starts at 9:30 p.m., ODC Theater becomes a nightclub in which the Kupers-Cress-Ostrovsky trio meet for an extended jam session, which the audience is invited to join. 7 and 9:30 p.m., 3153 17th St., S.F. $12-$15 ($17-$20 both shows). (415) 863-9834, www.odctheater.org. (Rita Felciano)