Professor Brainus performs at NorthPark Center, using interactive science experiments and live music. The show is at 2 p.m. Saturday between Nordstrom and Macy’s.

Midnight Madness is still on tap at Inwood Theatre, Friday and Saturday featuring “The Maltese Falcon” with Humphrey Bogart. Admission is $10.

Uncle Calvin’s Coffeehouse presents folk singer Amilia K. Spicer at 8 p.m. Friday. Tickets are $10-$15.

North Haven Gardens presents its African Violent Show and Sale 10 a.m.-5 p.m. Friday and Saturday, featuring free programs on how to plant and care for the flowers.

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