Migrating Forms, an offshoot of the defunct New York Underground Film Festival, runs tonight through Sunday at Anthology Film Archives in lower Manhattan. The five-day program is book-ended with feature-length films -- a 1960s-flavored, episodic satire of religion, philosophy, and criticism (Owen Land’s Dialogues) and a documentary about creationist geologists who offer evidence that the world is 6,000 years old (Michael Gitlin’s The Earth Is Young). In between there are almost one hundred long and short works to suit every taste. If you can’t get enough YouTube appropriation, montage, and computer effects, try going Saturday at 7:15 for "Mixed and Maxed," a program featuring Animal Charm and Oliver Laric, or Sunday at 4:45 for "Mature Audiences," with works by Jesse McLean and Takeshi Murata. At Saturday night’s "Tube Time!" tournament, audience members will decide which contestant found the weirdest footage online. The full schedule is here. Single tickets cost $10, and a festival pass costs $50 -- or you can get one free by being the third person to email info[at]migratingforms.org with Rhizome in the subject line!