Proof Robert Foxworth and Chelsea Altman in Pulitzer and Tony-winning drama in town from Broadway. At the Wilshire Theatre... 8440 Wilshire Blvd., Beverly Hills 213.365.3500 or 714.740.7878 Through 14 June. Sorrows and Rejoicing South African playwright Athol Fugard-s new drama. At The Mark Taper Forum, 135 N. Grand Ave., L A Music Center. 213.628.2772 Through 30 June. Red Thread Ziggurat Theatre Ensemble-s exploration of myths and rituals. At the Gascon Center Theatre, 8737 Washington Blvd., Culver City. 310.842.5737 Through 23 June. Review by Jennie Webb
