When Shaun Caley Regen and her late husband Stuart opened Regen Projects in Los Angeles in 1989, they didn’t have much company. “The L.A. art community was basically three galleries,” she says. This month, her bellweather gallery hits its quarter-century mark, and, to celebrate, the Danish artist Sergej Jensen will unveil paintings in Regen’s West Hollywood location, while Turner Prize winner Gillian Wearing will present two video works in Regen Projects’s second, Michael Maltzan-designed space in East Hollywood. (Both shows run December 13 through January 24.) “This is the first time Gillian has created and debuted a work in Los Angeles,” says Regen of Wearing’s Fear and Loathing. The British art star found her subjects through the classifieds and interviewed them in trailers and motel rooms around the city, asking them to describe what they fear and loathe most; in other words, business as usual in Tinseltown.