If Jack were to answer that question honestly, he'd give it a lot more thought. He wants to go back to when he came from, make sure that Gwen's alright and they're not just leaving her all by herself there. But there's more explanation in that than he feels comfortable saying, so instead he says.

"Resort planet," he says. "Definitely a resort planet. There are tons of them out there, each one with their own special twist. Don't think I could narrow it down to just one."