I think the lounge at the boneventure has that rotating room thing. Shit in there is really expensive though, but it's a nice view, sneak a peak and if you want to get reamed on food/drink prices stay for awhile.
I've never been but I hear California's wine country is pretty cool. Although I've never been one for big cities so maybe that is the only part of CA I've ever been interested in.
Which wine country? CA has several. Napa is of course the most well known/famous - there's the San Luis Obispo, there's Santa Barbara, there's Temecula and I think there are a few more too. If you like wine, there's plenty of it in CA.
LA, SD, SF are all great places with enough stuff to keep you busy for awhile. Assuming you can shell out for it. There are tons of great restaurants and bars in all three cities.
Outside of the three major cities there's a lot to do too if you have time. Orange County has neat stuff, old town orange is nice, Anaheim has Disneyland, Carlbad has legoland, Encinitas has the Wild Animal Park part of the San Diego Zoo (which some people say is better), etc. The central valley - you can void. The Central Coast region (Santa Barbara - San Luis Obispo) is lovely, but go to one of the extremes. SB is good, SLO area (Pismo, Morro Bay) are good to visit, but the stuff between them is kinda meh.
If you've never had it or you have and you like it - LA is as good of a place as any to get Korean food. It's as good as you'll get outside of Korea. There's a bunch of all you can eat BBQ places for pretty cheap.