Glittery, gritty 'Rocky' sparkles at Cygnet
At the moviehouse, shouting lines at the screen is just part of the "Rocky Horror" experience. In live theater, "Rocky" talks back " comically, provocatively and with a whole lot of fab attitude. At least it does at Cygnet in Old Town, where artistic director Sean Murray is currently strutting around in fishnets and leather as the musical's "sweet transvestite" Frank N. Furter, and letting his mouthier patrons have i…