Arlington's Artisphere turns a year old this weekend with a celebration featuring original art, music and off-beat arts activities. The arts complex commissioned local artist and cinematographer Brian Stansfield to create Orbit, a site-specific video work, with original scores created by local musicians and sound artists. The evening's events also include a performance of Brandon Wetherbee's live variety show with interviews and more. Saturday, Oct 8, at 8 p.m. Artisphere, 1101 Wilson Blvd. Arlington. Tickets are $15, or $30 VIP. Call 703-875-1100 or visit artisphere.com.