2 questions in 1 : any shows like Terminator: The Sarah Connor Chronicals & any shows like Roswell ?

So I can't stop watching both of them and I'd like to know if there is anything else I'd like to watch. For Terminator, I'm also watching Firefly so don't tell me that one and Roswell I'm already watching Pretty Little Liars and also, please don't say Buffy ! Thankss !