My extended family (including my kids) love Sci-Fi. The atmosphere is fantastic, and burgers and shakes are very good. We also enjoy 50s Prime Time, though we split entrees as the portions are huge.
We're not fans of most QS places in HS, but don't mind a snack or meal at Pizza Rizzo (formerly Pizza Planet). It's not great amazing fantastic pizza, but has decent food with cold beer. A bonus is its often not as crowded as other QS venues given its location, which means we snag a seat under and umbrella outside, which we enjoy.