Most movies made in high school are best left in storage. But for multimedia artist Ryan Trecartin, who filmed a short titled “Junior War” starring his high school friends 15 years ago, it recently became a part of his installation at the 55th Venice Biennale. Tonight, Trecartin drops by BAM as “Junior War” make its U.S. debut along with three more of his short films at the fifth annual video and film festival Migrating Forms. If you’re not familiar with his elaborate mash-up films that usually depict a hyper-real world gone freak show, then this is the perfect time to get acquainted. Besides Trecartin’s work, the festival includes several U.S. and New York debuts and films by 36 artists from 15 countries. And mark your calendars for December 14, when The New Yorker’s Hilton Als interviews Sandra Bernhard after a screening of Without You I’m Nothing, the 1990 film adaptation of her solo Off-Broadway show.

Mondays-Sundays, 8 p.m.; Thu., Dec. 12, 9:30 p.m. Starts: Dec. 11. Continues through Dec. 17, 2013