Critical Mass

Chicago Critical Mass bike rides start from Daley Plaza, Dearborn & Washington at 5:30pm the last Friday of each month, regardless of season or weather. They are free and fun. All you have to do is show up with your bike.

Animal House @ Film Center

Made back when National Lampoon was still doing good stuff, the classic 1978 movie Animal House screens tonight at the Siskel Film Center as part of their American Film Comedy series. The film starts tonight at 7:45, and also screens on Tuesday the 30th at 6:00. Siskel Film Center: 164 N. State. (312) 846-2600.

Dr. Strangelove @ Music Box

Yeah, remember when the only thing we had to fear was nuclear annihilation by the Russians? Those were the days. Anyway, the classic Stanley Kubrick film opens tonight at the Music Box in a new 35mm print, created in time for the film's 40th anniversary. Check local listings for showtimes. Music Box: 3733 N. Southport. (773) 871-6604.

Holiday tree lighting @ Daley Plaza

The 91st annual Holiday Tree Lighting Ceremony happens this afternoon at 5:00 in Daley Plaza (the downtown corner of Clark and Washington Streets). If you show up at 4:00, you'll get a program of musical entertainment, as well as free samples of gingerbread lattes, Christmas blend coffee and peppermint hot chocolate, courtesy of Starbucks. The event is free and open to the public.