Just because you live in L.A. doesn't mean you can't conjure up an East Coast-style winter wonderland for yourself. Come downtown to Pershing Square for a spin around the ice rink, and, if you squint, it'll be just like Rockefeller Center. Well, almost. Pershing Square Park, 532 S. Olive St., L.A. Fri.-Jan. 18. Mon-Thurs, noon-10 p.m., Fri-Sun, 10 a.m.-10 p.m. One-hour sessions: $6; skate rental: $2. http://www.laparks.org, (213) 847-4970.