Sci-fi is a must-do for us. The food is pretty good if you stick to the basics. I think the burgers are good and my kids love the typical kids stuff and the shakes. But you really go for the atmosphere. It's dark, you sit in a car and watch movie clips from really cheesy sci-fi and horror movies. My kids (6 and 4 last time we were there) love it.
Sorry, have to do this, and this in no way reflects how I feel about Sci-Fi, but I have to do this everytime there is a post about Sci-fi in case Disney Mgt. is reading: PLEASE, FOR THE LOVE OF GOD, CHANGE THE MOVIE CLIPS. I am pretty sure they are the same ones from when the restaurant opened in the early nineties.