Howl-O-Scream: Busch Gardens' kicks off its Halloween celebration tonight with haunted houses, scare zones, roller coasters in the dark and spooky live shows. This year, Taco Bus will be at the park for late-night grub. Gates open at 7:30 p.m. at Busch Gardens in Tampa. $89, but online tickets start at $48. (813) 987-5600.
Roy Wood Jr.: The comedian was on Entertainment Weekly's list of rising comedy stars to watch because of his deft radio work and role on the TBS sitcom Sullivan and Son. See him at 8 p.m. at Side Splitters Comedy Club, 12938 N Dale Mabry Highway, Tampa. $10-$18.50. (813) 960-1197.
Super Boat National Championship and Festival: Three days of racing start today, featuring powerboats that reach 180 miles per hour, activities in downtown Clearwater and on Clearwater Beach anda super boat parade down Cleveland Street as part of the Blast Friday street party. It starts at noon at Coachman Park, 301 Drew St., Clearwater. Spectators free. (727) 593-5536.
Celebrate Oktoberfest: Celebrate Oktoberfest with food, beer, live bands, a parade and keg tapping ceremony. It all starts at 5 p.m. at the German American Society of Pinellas County, 8098 66th St. N, Pinellas Park. $6; children 12 and under free. (813) 625-1274.
Broadway Cabaret Side Door Opera: Twelve singers from the St. Petersburg Opera's upcoming Romeo and Juliet will present selections from Cabaret, Kiss Me Kate, The Wiz and more. Ticket price includes dessert and two drinks. It's at 7:30 p.m. at Palladium Theater, 253 Fifth Ave. N, St. Petersburg. $75. (727) 822-3590.
SERIES PREMIERE MasterChef Junior, 8 p.m., Fox Whoever thought it'd be great to subject 8- to 13-year-olds to the profane jabberings of Gordon Ramsay either got fired or was promoted to president of Fox.
SEASON PREMIERE Hawaii Five-0, 9 p.m., CBS Shooters take over HQ, but Capt. Lou Grover (last seen in the original series) shows up, so everything is cool.
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Find date night ideas at tampabay.com/things-to-do.