Pharmacy111, deciding whether to bring your car really depends where you are going to live and what kind of lifestyle you would like to maintain. First, if you decide to live at Turk, the apartment owned by UCSF and ruled by the pharm students, then parking is available, as well as the single-unit housing units at Aldea Housing. If you decide to live near campus and live at one of the Avenue Houses, parking is harder to find although you are allowed to apply for a permit which allows you to park on the streets from 3rd to 10th or 11th Avenue (I forget) for the entire day instead of the usual 2 hours. You can also rent space in someones garage, the asking rate going anywhere from $100-$300/month or more, I suspect.
I live further away from campus in a private flat, so I usually can park on the streets when space is not available in our garage. However, I am moving closer to campus come next fall, so I am thinking about giving up my car. This leads me to the next topic. If you are the type that loves to drive and go discover new places around the Bay Area--the Peninsula, Marin, Napa, Oakland, etc.--then a car is a must unless you find some awesome friends who will drive you around. For me, I like hanging out in the city, and the city's rail system, Muni, takes me where I want to go.