More than any version of 'Picnic' I've seen this one, which has been designed with period exactitude by Andrew Lieberman (set) and David Zinn (costumes), highlights the role of prettiness as both a burden and an aspiration...Mr. Stan...mostly registers as more of an objet d'art than a sex object. Ms. Grace...embodies Madge's small-town self-consciousness with an appealing ease...But except for in one dance sequence (nicely staged by Chase Brock), when Madge and Hal discover a shared rhythm, there's not much chemistry flowing between these two. Even clawing at each other's clothes, they somehow seem to be lost in their own, isolating thoughts. The same might be said of the cast as a whole. Which means that, lacking an electric current to invisibly connect its characters, this 'Picnic' remains little more than a billboard for prettiness.