Butler Little Theatre, One Howard St., is staging U.T.B.U. (Unhealthy To Be Unpleasant)" about the antics of a manic and zany group that fights back against the rude, the greedy and the nasty, through Saturday. Tickets are $10. Call 724-287-6781 between 7 and 9 p.m. or visit the Web site, www.bltgroup.org.

The Young Actors Christian Kompany (YACK) will present the musical "Do Black Patent Leather Shoes Really Reflect Up?" starting Wednesday and continuing Dec. 12, 19, 20 and 21 in Strobel Hall of St. Paul Lutheran Church, 215 N. Main St. The story is about teenagers and their struggles over growing up. The curtain is at 7 p.m. with an extra matinee performance at 2 p.m. Dec. 20. Admission is free, but donations are accepted. Call 724-452-4767.

Comtra Theatre, Route 19 in Cranberry Township, presents "A Christmas Carol" from Friday through Dec. 20 at the theater on Route 19. "Sweeney Todd" is planned for Jan. 9 to 17. Curtain is at 7:30 p.m. Fridays and Saturdays. Admission is $12 for plays and $15 for musicals. Box office opens at 6:45 p.m. the day of the show. Call 724-773-9896.

<B>"A Musical Christmas Carol" </B>presented by Pittsburgh CLO will be staged from Friday through Dec. 21 at the Byham Theater, 101 Sixth St. Tickets range from $26.50 to $44.50 with half-priced tickets available for children ages 3 to 14. Tickets will go on sale Friday. Call 412-456-6666 or visit the Web site, www.pittsburghCLO.org.<B>City Theatre</B> heralds the return of "Sister's Christmas Catechism" by Maripat Donovan Tuesday through Dec. 28 at City Theatre's 252 seat main stage. Kim Richards reprises her role as Sister in an evening filled with laughter and the infamous "Living Nativity" involving audience members. The schedule has shows at 7 p.m. Tuesdays, at 8 p.m. Wednesdays through Fridays, at 2 and 5:30 p.m. Saturdays, and at 2 p.m. Sundays with a special Christmas week schedule at the City Theatre, Bingham and 13th Streets on the South Side of Pittsburgh. Tickets range from $35 to $60. Call 412-431-2489.<B>"Frost/Nixon,"</B> the 2007 Tony Award-nominated new play by Peter Morgan, will run Tuesday through Dec. 28 at the Benedum Center, 719 Liberty Ave. Stacy Keach takes on the role of President Richard Nixon and is joined by British actor Alan Cox as David Frost. Curtain is 7:30 p.m. Tuesdays through Thursdays; at 8 p.m. Fridays; at 2 and 8 p.m. Saturdays; at 1 and 6:30 p.m. Sundays. Tickets range from $20.50 to $54.50 and are available by calling 412-456-6666.<B>The Brown Chapel Heir Force</B> will present "The Treasure: A Modern Christmas Story" at 7 p.m. Wednesday at the New Hazlett Theater, Allegheny Square East at Allegheny Center on the North Side of Pittsburgh. The contemporary Christmas story explores the discovery of a treasure chest that has deep historical meaning for an urban family. Tickets are $10 for adults and teenagers for gold circle seats or $5 for general admission. Children younger than 12 are admitted free. Call 412-471-4332.<B>Pittsburgh Public Theater</B> brings to life newspaper advice columnist Ann Landers in "The Lady with All the Answers," through Dec. 14 in the O'Reilly Theater, Pittsburgh Public Theater's home at 621 Penn Ave. The curtain goes up at 8 p.m. Tuesdays through Saturdays (except Dec. 9 when the show is at 7 p.m.), at 2 and 7 p.m. Sundays (except Dec. 14 when the only show is at 2 p.m.), with additional 2 p.m. matinees on Saturday and Dec. 11 and 13. Tickets range from $31 to $50; students and those age 26 and younger pay $15.50. Call 412-316-1600 or visit the Web site, www.ppt.org.<B>The original Christmas musical "Come to the Well" </B>will be staged at 7:30 p.m. Friday, Saturday and Monday at Memorial Park Church, 8800 Peebles Road, Allison Park. The full-scale musical set near the time of Christ's birth at a well just outside Bethlehem features two acts with 12 main characters, a full choir and professional instrumental ensemble. Tickets are $10. Call 412-364-9492.<B>The Backstage Bar and Cabaret at Theater Square</B>, a project of The Pittsburgh Cultural Trust, in Theater Square at 655 Penn Ave., is staging "I Love You, You're Perfect, Now Change, through Feb. 1, 2009, at the CLO Cabaret, 655 Penn Ave. Performances start at 7:30 p.m. Wednesdays through Saturdays, at 2 p.m. Saturdays and Sundays and at 1 p.m. select Thursdays, except some holiday dates in November, December and January. Tickets are $39.50 for evenings or $34.50 for matinees. Call 412-456-6666 or visit the Web site, CLOcabaret.com.

<B>New Castle Playhouse</B>, 202 E. Long Ave. in New Castle, is staging "A Funny Thing Happened on the Way to the Forum" through Sunday. Curtain is at 7:30 p.m. Friday and Saturday and at 2 p.m. Sunday. Tickets are $15 for adults, $12 for senior citizens age 60 and older, and $10 for children age 12 and younger. Call 724-657-9369.