If you think you know Shakespeare’s “Romeo and Juliet” inside and out and are hesitating to see another production of it at Synetic Theater, think again. To begin with, this is one of Synetic’s famous silent productions, where director Paata Tsikurishvili finds alternatives to Shakespeare’s poetry and prose in movement, mime, dance and music, using an imaginative new physical vocabulary to tell familiar tales. So no matter how many conventional productions of “Romeo and Juliet” you may have seen, this one will lodge in your memory not only for the picture it paints of exquisite love, but also for its exuberance, its comedy and its image of a vibrant, passionate Verona.