Turn off your cell phone (unless, of course, you’re reading this on it), and if you have any candy, unwrap it now. We’re starting the Reader’s Onstage blog: an electronic conversation and news exchange about the performing arts, including theater, dance, and all manifestations of comedy, from improv to stand-up. We’d love to have you strut and fret with us on this stage, so send your thoughts, responses, and news, like casting announcements, personnel changes, audition notices–whatever you’ve got. As Joel Grey told those folks in Berlin, Wilkommen, bienvenue, welcome.