"Floor of the Forest," a retrospective dance performance celebrating the work of Trisha Brown, will come to life as dancers weave their way through a steel-and-rope sculpture draped in clothing. The dancers move through the apparatus by slipping into and out of the clothes, without touching the ground. The piece was first performed in 1970 by Brown and Carmen Beuchat in New York City's SoHo neighborhood. The Hammer Museum courtyard, 10899 Wilshire Blvd., L.A. 1, 3, 5 and 7 p.m. Thu. and Fri., and noon, 2 and 4 Sat. and Sun. Free. (310) 443-7000; http://www.hammer.ucla.edu.