4 special film screenings coming up in Marin

• A restored version of the 1980s film “On The Edge,” starring Bruce Dern as a long-distance runner in a story inspired by Marin’s Dipsea Race, will be shown at 7 p.m. Thursday at Sequoia Cinema at 25 Throckmorton Ave. in Mill Valley. A Q&A with director Rob Nilsson will follow. Admission is $13 to $15. Go to sequoiafilm.org/on-the-edge.

• “American Agitators,” a documentary about labor organizer Fred Ross Sr. and his legacy, will be shown at 4:30 p.m. Jan. 24 at the Lark Theater at 549 Magnolia Ave. in Larkspur. Admission is $11 to $14. Go to larktheater.net.

• “The Princess Bride,” the classic 1987 fantasy comedy directed by the late Rob Reiner, will be shown at 2:30 p.m. Jan. 24 at the Novato Library at 1720 Novato Blvd. in Novato. Snacks will be provided. Admission is free. Go to marinlibrary.org.

• Blue Frontier and Hog Island Oyster Co. present “Help the Kelp,” a benefit event for Northern California’s kelp forests, from 3 to 6 p.m. Feb. 1 at the Dance Palace at 503 B St. in Point Reyes Station. The event will feature a screening of the documentary “Sequoias of the Sea,” followed by a discussion about kelp forest collapse and a reception with Hog Island oysters and seaweed art. Admission is $22 until Jan. 26 and $27 after; youth ages 12 and younger are free. Go to tickettailor.com.