by Amy Crocker

HOLIDAY: Oh come all ye faithful to the 80th Annual Golden Gate Park Christmas Tree Lighting. Put on by the San Francisco Parks Trust (sfpt.org), the free event will feature caroling and will hopefully remind us that December is a time of joy and celebration, not just gray skies and rain.

5 - 7:30 p.m. // McLaren Lodge (501 Stanyan) // Free

PARTY: San Francisco's Skyy vodka, Paso Robles' Firestone beer, Napa Valley's Scott Harvey wine, and more than 20 San Francisco restaurants will provide complimentary refreshments for Yelp.com's 5th annual holiday party, Yelp Unwrapped. Whoa, wait a minute - did somebody say free beer?

8 p.m. // Westin St. Francis (335 Powell St) // Free

ART: Students in the graduate seminar at California College of the Arts will project their work across the San Francisco campus tonight for Nightlight: An Exhibition of Site-Specific Projections. The art will attempt to show how light and imagery can redefine structure and physical presence. Displays are planned for the Graduate Center (Hooper Street), the Writers' Studio (195 De Haro at 15th Street), the Production Studio (within the main SF campus building 1111 Eighth Street), and outside the main SF campus building entrance.

7-9 p.m. // San Francisco Campus of the California College of Arts // Free