San Francisco Bay Area: Your favorite things to do or places to go

[ReptileHouse]

Well, I'm going to be in SF this weekend. Coming in for a business trip, but have Saturday mostly available to take advantage of some of the fine suggestions in this thread and others.

In particular, I'll very likely be spending some time eating good sushi and may make a stop at Harris' for a good steak.

If anyone local wants to meet up for a beverage or two (El D?), that'd be great. Be forewarned, though. I'm not some hip youngster. I'm a middle aged engineering business type who prefers to relax with a good beer/fine wine/single malt scotch rather than go clubbing.