Your favourite fan theories?

[M.10rda]

I LOL'd @ the "St. Elsewhere" non-theory.

Not so much of a non-theory, really.

https://en.wikipedia.org/wiki/Tommy_Westphall#The_Tommy_Westphall_Universe_Hypothesis

I will maintain it isn't a "theory" as it is the actual canonical ending to the series. 

Similarly it isn't a Theory that the events of NEWHART were all a dream experienced in the subconscious mind of the main character from THE BOB NEWHART SHOW. It's a Fact! {insert GIF of the KITH "It's A Fact!" Girl here}

[Dr. Whom]

The attack on the Death Star was insurance fraud. I mean, this guy gets a wonder weapon built at great expense and then his son destroys it in a highly improbable attack, while he himself is conveniently the only survivor? Come on!

[Trevor]

The attack on the Death Star was insurance fraud. I mean, this guy gets a wonder weapon built at great expense and then his son destroys it in a highly improbable attack, while he himself is conveniently the only survivor? Come on!

    

[Dr. Whom]

The attack on the Death Star was insurance fraud. I mean, this guy gets a wonder weapon built at great expense and then his son destroys it in a highly improbable attack, while he himself is conveniently the only survivor? Come on!

    

And the reason he didn't kill his son and was conveniently catapulted out to space was because his son's best pals suddenly showed up out of nowhere? I think there should be Death Star truthers in universe, with Darth Vader force choking some of them every so often.

[WingedSerpent]

I like the one that Signs isn't about aliens. Its about demons

The indoraptor from JW:Fallen Kingdom had some human DNA in its genetic code. Specially Charlotte Lockwood' DNA, making it and the clone Maisie siblings so to speak.  That's why it seemed to be a lot smarter then the other dinosaurs and had a particular interest in Maisie.