THEATER TREATS FOR A HALLOWEEN EVENING

As the witching hour approaches, local theaters are plotting Halloween happenings. Here are 13 theatrical tricks and treats, to be held on Halloween night only, unless otherwise noted:

--The Groundling Theatre’s improv troupe promises a ghostly edition of its comedy revue at 8 and 10 p.m. As an additional treat, audience members who come in costume will receive a ticket to a future Groundling production. Prizes will be awarded for the unusual and outlandish. (8 and 10 p.m., 7307 Melrose Ave., Hollywood, (213) 934-9700.)

--Comic pianist “Dale Gonyea: A 12 O’Clock Guy in a 9 O’Clock Town” has added Halloween material and tunes to his regular Friday show at the Canon Theater in Beverly Hills where costumed theatergoers will receive a $2 discount on the price of admission. (8:30 p.m., Canon Theater, 205 N. Canon Drive, Beverly Hills, (213) 859-2644 or (213) 480-3232.)

--Contribute to the carnival atmosphere at the Coast Playhouse by coming costumed to a special midnight performance of Tom Eyen’s bizarre comedy “Why Hanna’s Skirt Won’t Stay Down.” (8:30 p.m., Coast Playhouse, 8325 Santa Monica Blvd., West Hollywood, (213) 650-8507.)

--Wear the ‘40s look to “American Satire,” an evening of comedy, Halloween treats and activities at Theatre West, and get in for half-price. (8 p.m., Theatre West, 3333 Cahuenga Blvd. West Hollywood, (213) 851-4839.)

--Indulge in more recent nostalgia at Carlos & Charlie’s by attending the Perines’ musical spoof of the ‘60s in the mod and mini attire of that era. (9 and 11 p.m., Carlos & Charlie’s, 8240 Sunset Blvd., Hollywood, (213) 656-8830.)

--Or come as a favorite television character to “Familiar Faces,” a musical comedy revue presented by KIEV Radio talk-show host Gregg Hunter on Friday and Saturday at the Elbow Room in Hollywood. Character actor Jack Fletcher, a familiar face on television, is the special guest. (9 and 10:30 p.m. both days, Elbow Room, Cassis Bar and Grill, 8450 West 3rd St., (213) 653-1079.)

--In Studio City at Room for Theatre, George S. Kaufman’s 1925 Broadway behind-the-scenes comedy “The Butter and Egg Man” allows its audience the chance to attend in period costume and enjoy post-performance “vintage” holiday treats. (8 p.m., Room for Theatre, 12745 Ventura Blvd., Studio City, (818) 509-0459.)

--Consumable Halloween goodies will be found at the Tiffany Theater where two comedy musicals run on separate stages: “Nite Club Confidential” at 8 p.m. and L.A. Theatre Works’ “Bouncers” at 8:30 p.m. on the South Stage. (Tiffany Theater, 8532 Sunset Blvd., Hollywood, (213) 652-6165.)

--”Pump Boys and Dinettes,” the rowdy country rock musical at the Las Palmas Theatre (see Sylvie Drake’s review on Page 1), will be dishing out treats as well. (8 p.m., Las Palmas Theatre, 1642 N. Las Palmas Ave., Hollywood, (213) 466-1767.)

--The Burbank On Stage Theatre is serving up extra chills with a special 11 p.m. performance of “Wait Until Dark,” promising a ghoulish surprise during the midnight intermission of Frederick Knott’s thriller. (11 p.m., Burbank Theatre, 1111 W. Olive Ave., Burbank, (818) 848-7791.)

--Demonic comedy lurks at the Wallenboyd Theater where John Fleck’s strange Halloween play about possession, “I Got the He-Be-She-Be’s,” shares the bill with Rob Sullivan’s slightly sinister theater piece “Flower Ladies and Pistol Kids.” (8 p.m. Also Saturday at 8 p.m., Wallenboyd Theater, 301 Boyd St., (213) 629-2205.)

--The night wouldn’t be complete without a haunted house. The Gnu Theatre in North Hollywood is hosting a Haunted House party following the performance of George Sibbald’s blue-collar family drama, “Brothers.” The festivities are included in regular admission and for those attending in costume, tickets will be half price. (8 p.m., Gnu Theatre, 10426 Magnolia Ave., North Hollywood, (818) 508-5344.)