We went to San Diego with barely any plans in mind - we know we're going for Sea World and the Zoo, but besides that I've just been consulting Yelp for a few good botanical gardens and museums and earlier we raided the hotel's brochure rack. We might go kayaking in the San Diego caves. Fun!
The only thing I've done when was in San Diego was attend Comic-Con twice and walk around downtown trying to find cheap food. I also saw Jack Black walking around. But that's about it. Anyone out there in Inter-Land have San Diego Suggestions?