"The Incredible Spider-Guy" - The Gaslight Theatre, 7010 E. Broadway. Musical spoof starring your friendly neighborhood web-head. 7 p.m. Tuesdays-Thursdays; 6 and 8:30 p.m. Fridays and Saturdays; 3 and 6 p.m. Sundays. $18.50; $16.50 students, seniors, military; $8.50 age 12 and younger. 886-9428.
Not Burnt Out Just Unscrewed - St. Matthew's Episcopal Church, 9071 E. Old Spanish Trail. Family-friendly improv comedy with some audience interaction. 7:30-9 p.m. Free. 861-2986.
Park Place Guitar Festival - Park Place, 5870 E. Broadway. Southern Arizona Arts & Cultural Alliance presents a two-day multigenre guitar festival. At 6 p.m. Friday, "Guitars and Growlers" will feature beer and food samples and live blues; on Saturday the festival starts at 10 a.m. and features performances, guitar appraisals and other activities. Free. 797-3959.
Nature Nights: Evening Owl Walk - Gabe Zimmerman Davidson Canyon Trailhead at Cienega Creek Natural Preserve, 16000 E. Marsh Station Road, Vail. Learn about these nocturnal hunters and listen to prerecorded owl calls before heading out on the trail in search of owls. Bring a flashlight and wear dark clothing. 7:30-9 p.m. Free. 615-7855.
Tucson Noir Signing at Mostly Books - Mostly Books, 6208 E. Speedway. Members of the group will read from their crime short stories. For adults. 2-3 p.m. Free. 571-0110.
Young Adult Book Discussion - Mostly Books, 6208 E. Speedway. Discussing "Between" by Jessica Warman. 4-5 p.m. Free. 571-0110.
Broadway Proper Retirement Chili Cook-Off - Broadway Proper Retirement Community, 400 S. Broadway Place. Senior retirement community's second annual chili cook-off. Categories include: Classic, no-bean, wild game, vegetarian, best overall chili, best vegetarian, spiciest, most unusual. 2:30 p.m. Free. 296-3238.
All About Bats and Family Astronomy Night - Arizona-Sonora Desert Museum, 2021 N. Kinney Road. View the desert skies and study stars, planets, moons. 6-10 p.m. $12 for adults; $4 for kids ages 4-12; free for kids 3 and younger. 883-2702.
Meet the Hohokam - Saguaro National Park East, 3693 S. Old Spanish Trail. Meet the early inhabitants of Saguaro National Park in this indoor presentation. Discover what the early desert people used for food, shelter and clothing. 3 p.m. Saturdays and 11 a.m. Sundays. Free. 733-5153.
Backbeat AZ Presents Route 66, A Tribute to Chess Records - The Gaslight Theatre, 7010 E. Broadway. Featuring songs by blues and soul artists Etta James, Howlin' Wolf and Muddy Waters. 7-9 p.m. $19.95 plus tax. 886-9428.
All About Saguaros - Saguaro National Park East, 3693 S. Old Spanish Trail. Join a park naturalist in the visitor center lobby to delve into the life of a saguaro cactus. Wheelchair-accessible. 10 a.m. Mondays. Free; $10 per vehicle to enter park after the presentation. 733-5153.
"Color Play" Art Exhibition - Desert Artisans' Gallery, 6536 E. Tanque Verde Road. New works by Gail Brynildsen, Pamela Howe, Susan Meyer, Terry Slonaker, Jan Thompson and Alexandria Winslow. 10 a.m.-5 p.m. Mondays-Saturdays; 10 a.m.-1:30 p.m. Sundays. Free. 722-4412.
A Taste of the Desert - Saguaro National Park East, 3693 S. Old Spanish Trail. Stroll through the cactus garden to explore the many ways people use desert plants for food, clothing, shelter and medicine. 10 a.m. Tuesdays. Free; $10 park entrance per vehicle. 733-5153.
Photographs by Members and Friends of UUCT - Unitarian Universalist Church of Tucson, 4831 E. 22nd St. 9 a.m.-1 p.m. Wednesdays through Fridays; 11:45 a.m-1 p.m. Sundays. Free. 748-1551.
Comic Book Release Party - Charlie's Comic Books, 5460 E. Speedway. Eric M. Esquivel will sell and autograph copies of the first issue of his new comic book series, "The In-Crowd." 4:30-5:30 p.m. Free. 320-0279.
Tap Dancing for Everyone - Atria Bell Court Gardens, 6653 E. Carondelet Drive. Class 327. Improve your coordination and learn the history of America's only original contribution to the art of dance. For those age 50 and older. 2:15 p.m. Wednesdays. $38 and a one-time registration of $12 per semester. 322-5607.
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