Small Metal Objects

Fri., May 30 2008 at 12:00AM

As anyone whos done the classic afternoon walk round Green Lake will tell you, theres nothing better than an overheard conversation. Its a shock to realize that everyone from roller-bladers to elderly dog-walkers has the same unpredictable and sporadically fascinating inner lives as ourselves. Australian company Back to Back Theater, a collection of six artists variously diagnosed with intellectual disabilities, has created a theatrical piece (presented by On the Boards) that similarly caters to our inner voyeur. Small Metal Objects is a conversation between two invisible men thats overheard by their audience via headphones. As people mill about SAMs Olympic Sculpture Park, theyre slowly brought into a dialogue about the marginalization of certain people who are less productive than others. As the speakers are gradually revealed, a question also emerges: Who is invisible to us every day? And what will it take for us to see them? Olympic Sculpture Park, 2901 Western Ave., 217-9888, www.ontheboards.org. $24 (advance tickets only). 7 p.m. Thurs., May 29, 4 & 7 p.m. Fri., May 30-Sun., June 1. JOHN LONGENBAUGH