The latest to stop being a joke and become reality is The Flight of the Navigator which is being prepped by Disney. According to The Hollywood Reporter, they've set Brad Copeland to pen the remake, and it's being produced by David Hoberman and Todd Lieberman. There's not much more information than that, but I imagine they'll keep the same story, and just beef it up a bit.
You remember the story, right? A young boy is abducted by aliens in 1978 and experiences a serious case of missing time, as he returns eight years later. His family has moved, his kid brother has grown up, and NASA puts him in lockdown. (The boys will remember he's waited on by a ridiculously cute Sarah Jessica Parker.) It was horribly traumatizing if you saw it as young as my sister and I did ... but then it becomes exciting and cheery with a cool silver ship, and cute pocket-sized aliens. Then the "navigator" becomes hideously obnoxious as it talks like Pee Wee Herman and makes fart jokes for the rest of the film, which was disappointing to me even when I was young enough to like fart jokes. I imagine he'll talk like Dane Cook now.
So, yeah. I'm not going to scream "This is raping my childhood!" or anything as the movie hasn't held up that well, and has remake room. But it's just terrifying to watch an entire decade trotted out and dusted off like this. Kids need new sci-fi, not retreads!