Boston films, Somerville Dog Festival and more things to do this weekend

This weekend marks the start of fall, and there's plenty to do in the Boston area.

📽 The 39th annual Boston Film Festival kicked off Thursday and runs through Sunday.

• Check out Friday's virtual screening of the locally made short "In Cod We Trust" about Gloucester fishermen at 7pm or Saturday's 2:30pm screening of the environmental documentary "Common Ground."

🐶 ​The Somerville Dog Festival is Sunday at 11am at Trum Field, the park by Magoun Square.

• The free event will have games, costume contests, pet product vendors, treats and food trucks for the humans.

💃🏿 Ágora Cultural and Boston officials are holding a salsa night at City Hall Plaza on Saturday in honor of Hispanic Heritage Month.

• The salsa night, which runs from 5-8:30pm, includes dance classes and a performance by Boston-based Latin jazz band Clave & Blues.
• The event is free. Registration is encouraged.

🍻 Plus: ICYMI, Sam Adams and Night Shift Brewing are hosting a few Oktoberfest events this weekend.