A favorite Holiday tradition. Gather for hot cider in the Davis Food Co-op parking lot (620 G St.); line-up at 5:30p; parade steps off at 6p and marches downtown to E St. Plaza for the holiday tree lighting, live performances, Santa & Mrs. Clause & horse rides. Plus, catch one of three free screenings of How the Grinch Stole Christmas at Varsity Theatre (6p, 6:40p, 7:20p). Insider tip: park in the garage at 4th & G - it's a whole lot closer when you're walking back from the E St. plaza with a tired toddler.