Youtube comedians perform. 5 pm.
Morbid Anatomy museum host a kid’s halloween party, with trick or treating throughout the museum, a costume contest with cool prizes, creepy finger food, and a wet specimen workshop. Authors Tonya Hurley and Micol Ostow read from their books. 1–4 pm.
Family dance and costume party. 2–4:30 pm.
Featruing David Bromberg with Mark Cosgrove, Bruce Molsky, Tony Trischka and Michael Daves, Darol Anger, Joe K. Walsh and Grant Gordy, and Haas, Kowert, Tice. With Emcee Peter Sarsgaard. Raising money to restore the ceiling of the Old First Reformed Church of Park Slope. 3–7 pm.
Scholar Lesley Bannatyne traces the from its origins in Europe through its recent explosion in popularity in the U.S. 8 pm.
Live taping of NPR and WNYC show, hosted by Ophira Eisenberg with music by Jonathan Coulton. This edition’s guest is actress Eliza Coupe. 7:30 pm.
Six playwrights write new plays, each including the same five dramatic elements. When those elements appear on stage, the audience takes a drink. 7:30 pm.
Psychology professor Stanley Krippner will discuss his long history of investigating the spooks that are reported to be especially active at Halloween. 8 pm.
Atmospheric scientist and author Adam Sobel discusses climate change and Hurricane Sandy. 8 pm.
Storytelling series. 8 pm.
Professor Stephen Asma looks at research into the neuroscience of fear and cognition. 8 pm.
Dress up as an internet meme and win prizes. 8:30 pm.
Dress up like a zombie, and dance to live music by the Hollows, Sylvana Joyce and the Moment, Corn Mo, and T.R.J.B. 8:30 pm.
"Evil Dead II," “The Bride of Frankenstein,” “Friday the 13th: Part 2,” “Dracula: Prince of Darkness,” and “Return of the Living Dead.” Midnight.
Chefs from New York City compete for the title of best mac’n’cheese in the city, with attendees as the judge. 5–8 pm.
An illustrated lecture by Elizabeth Harper on Catholic Italian’s afterlife traditions. 8 pm.
An illustrated lecture by Romany Regan on the theories of the writer Dickens. 8 pm.
An illustrated lecture by Eric Bleich about the dark side of mechanized toys. 8 pm.
Dual album release party. 7 pm.
Hosted by Gideon Hambright and Patrick Hastie, and featuring comedians Eliana Horeczko, Justin Flanagan, Maurice Licorish, Zane Golia, Anthony DeVito, and Dan Shaki. 9 pm.
Comedy and music concert to benefit the Ally Coalition and New York Alternatives. Featuring James Adomian and Cameron Esposito. 8 pm.
Burlesque show celebrates 10 years with an all-day party. Includes a cocktail brunch, live music, a performances. 3 pm–close.
Backed by the Brooklyn Rhythm Band. 9 pm.
More than 30 dealers selling thousands of rare and collectible vinyl records. Noon–5 pm.
"Tzadik" album release show. 7 pm.