Selina,
unfortunatly, Zuma Beach is closed now

I think volcano is too.
Barbarella's is mostly alternative, rock and some techno music
Ciaro is not too bad it has a good mix, Dance in the main room, retro music on the second floor, regae on the rooftop.
Icon and Taboo (replaced Zuma Beach) are a more "upscale" but not too bad, they play techno, trance, and dance and the drinks are a little more expensive.
Chiller's on Church St. and One eyed Jack's are more laid back, mostly a good place to hang out, meet up before going to the other clubs, or just having a few beers.
Have a Nice Day cafe is ok as well if you like disco and 70's, they also have a new room they added that plays other types of music but I haven't been in since they added it.
I haven't been in a few months and can't think of any others right now.
Hope that helps.
(sorry about posting on the girls topic, but I figured if Spidey can then why not, and I was at least trying to be helpful, to make up for my guilt from lurking

)