I am fast getting addicted to taking my 1970's Cinelli track bike out to the veledrome on Wednesday nites.
Wednesday is basically hackers night from 5:30 to 8pm... open riding.. a chance for the "rest of us" to use our fixed gear bikes with any hassles.
I love it. please lemme know if you are coming. the following is the url for the Encino velodrome with directions and more info..
http://www.encinovelodrome.org/
cheers
scott