Scarecrow Trail, eighth annual, one of the Southeast’s Top 20 tourist attractions, Huntsville Botanical Garden, 4747 Bob Wallace Ave., 9 a.m.-5 p.m., $10, members free, 830-4447 or www.hsvbg.org.

Tate Farms Cotton Pickin’ Pumpkins, pick your own pumpkin, cotton jump, hay bale maze, hay ride and petting zoo, Tate Farms, 8414-A Moores Mill Road 8 miles north of U.S. 72, Meridianville, 2-6 p.m., $8, 828-8288 or www.tatefarmspumpkins.com.

CrisisCon 2K8, geeky con with sci-fi, fantasy, horror, anime and video games; musical guest md chris, rock band Motel Matches, guest writer J.F. Lewis, anime voice actress Tiffany Grant, Web comic artist Chris Hazelton, storm troopers 501st Vader’s First Alabama Garrison, Neo Neko Films; costume contest, masquerade party, Iron Editor Show Down, Magic the Gathering, World of Warcraft, Von Braun Center, 700 Monroe St., 10 a.m., three-day pass $30 in advance, at the door Friday $20, Saturday $25, Sunday $15, www.crisiscon.com.

“The Rocky Horror Show,” Renaissance Theatre, 1214-B Meridian St., 8 p.m. and midnight, $20, 536-3117 or www.renaissancetheatre.net.

“Urinetown,” Randolph School Rhett Fine Arts Center, 1005 Drake Ave., 10 p.m., $7, 881-1701 or www.showtix4u.com or www.randolphschool.net.

Nightmare on Clinton Street, fifth annual Halloween party, Huntsville Young Professionals, Huntsville Alive! and Valley Planet, live music by Hashbrown, costume contest, Clinton Avenue parking garage, 116 Clinton Ave., 8 p.m.-midnight, $5, wine and beer $3, VIP pass for $15, www.huntsvillehalloweenparty.com, www.gethyp.net, www.huntsvillealive.com, www.oldtownebeer.com and www.valleyplanet.com.

Halloween fun house, nothing scary, for preschool through elementary school age children, Farmers Market, 1020 Cook Ave., 8 a.m.-6 p.m., free, 539-9257.

Vienna Choir Boys, Huntsville Chamber Music Guild Celebrity Series, Trinity United Methodist Church, 607 Airport Road, 7:30 p.m., $25, ages 65 and over $20, students $15, 824-6540 or www.hcmg.uah.edu.

Huntsville Corn Maize, hay ride, corn-cob launcher, cow train, occasional bands, children’s play area, Huntsville Cornfield Maize, U.S. 72 between 107 and 108 mile markers, Brownsboro, 10 a.m.-11 p.m., ages 11 and up $8; ages 6-10 $6, ages 5 and under free with paid adult; haunted admission ages 11 and up $15, ages 6-10 $10, ages 5 and under free with paying adult; Trail of Terror Combo adults $20, kids $15, 866-687-6293 or www.cornfieldmaze.com/alabama.html.

“So You Want to Be a Slasher …,” Crash Boom Bang Theatre, realistic violence, definitely for mature audiences, Flying Monkey Arts Center, Lowe Mill, 2211 Seminole Drive, 9 p.m.-midnight, $10, 489-7000 or www.crashboombangtheatre.com.

Halloween costume DJ dance, Huntsville Swing Dance Society, Flying Monkey Arts Center, Lowe Mill, 2211 Seminole Drive, 8-11 p.m., $5, UAH students free, 489-7000 or www.huntsvilleswingdance.org.

Rocket City Dance Club, ballroom and Latin dance, Rocket City Dance Club, 2614 Artie St., 8-10 p.m., $10, 534-4994 or www.rcdcdance.com.

Ballroom, swing, salsa and more, group class at 7 p.m., party at 8 p.m., nonsmoking, Southern Elegance Dance Studio, 3005 L&N Drive, Suite 6, 7 p.m., $10, 519-8011 or www.southernelegance.info.

Line dancing, Hog Wild Saloon, 2322 South Parkway, 7 p.m., $5, 882-9361, 533-7446 or hogwilddancing@netzero.com.

Waltz lessons, no partner needed, St. Stephen’s Episcopal Church, 8020 Whitesburg Drive, 6-7 p.m., $5, bernieb53@comcast.net.

Traditional music, Coffee Tree Books and Brew, 7900 Bailey Cove Road, Suite A, 7 p.m., free, 880-6464.