Last Chance * ENDS THIS WEEKEND

THEATER

A successful American painter questions his role as an artist on the eve of his European debut in Donald Margulies’ drama “Sight Unseen,” which closes Saturday at Alternative Repertory Theatre, 125 N. Broadway, Santa Ana. “Margulies’ drama is less about ideas than it is about the boiling emotions behind the ideas, and the resulting denial in all those concerned,” wrote Times theater reviewer T.H. McCulloh, who lauded Laurie T. Freed’s insightful direction and Kathryn Byrd’s luminous performance as the early muse of an artist now willing to betray her. 8 p.m. today and Friday. 2 and 8 p.m. Saturday. $22-$25. (714) 836-7929.

Stephen Sondheim’s darkly funny musical, “Sweeney Todd: The Demon Barber of Fleet Street,” closes Sunday at the Cypress College Campus Theater, 9200 Valley View St. Based on an old English legend of a crazed barber and his enterprising accomplice, who murder and use the bodies to make meat pies, “Sweeney Todd” contains some of Sondheim’s most disturbing music and imagery, including a riotous duet about cannibalism and a bizarre minuet revolving around a rape. 8 p.m. Friday and Saturday. 3 p.m. Sunday. $9-$10. (714) 484-7200.

ART

When it comes to cartoons, few can match the pure creative genius and joyous abandon of Warner Bros. classics “Rabbit of Seville” and “One Froggy Night,” both directed by longtime Warner artist Chuck Jones. Through Sunday, production cels, limited edition prints and oil paintings from these and other classic 1950s cartoons are on view in “Chuck Jones: The Classic Films,” at the Chuck Jones Studio Gallery in Laguna Beach. The show includes imagery from such gems as “Rabbit Seasoning,” “Duck Amuck,” “Ali Baba Bunny” and “What’s Opera, Doc?” 10 a.m.-10 p.m. today, Friday and Saturday. 11 a.m.-7 p.m. Sunday. 225 Forest Ave. (949) 494-6869.

Wide-open vistas of rolling green hills brushed with dazzling patches of red, orange and purple blooms . . . sun-drenched meadows speckled with colorful lupines, poppies and clean white daisies. . . . It’s hard to imagine anything more beautiful than California’s springtime explosion of wildflowers. “Of Springtimes Past,” a show of wildflower art on view through Saturday at the Irvine Museum, captures the beauty and drama of springtime in early California. The show includes works dating from 1880 to 1930 by some of California’s finest impressionist painters, including John Gamble, Granville Redmond and Paul de Longpre. 11 a.m.-5 p.m. daily. 18881 Von Karman Ave., Suite 1250. Free. (949) 476-2565.