We went to Sci-Fi for a dinner, it was very disappointing. I had been looking forward to going because it looked really neat and was hard to get into. Well, the food was just bad (I don't say that often) and over priced. Since that time, I have done more looking at the descripancies and it appears that lunch at Sci Fi is a different menu and better (burgers, etc).
I probably wouldn't go again, except for lunch. Haven't done Hollywood and Vine, so I am not help there.