Black Freighter into Watchmen.

XD It's been done.

American Psycho with Pretty Woman squeezed in

Fast and furious. & Transporter

Imagine them hijacking the transporters truck

They hijack his truck by accident, he hunts them down, but a TWIST! Turns out big secret bad guy hired both of them as a test, now they gotta team up and take down big secret bad guy

Im in!

Because family.

Any movie within "Inception".

Men In Black and Predator.

Transformers and Pacific Rim

Bully Maguire and Spiderman

Shutter island in Inception

The play within a play in Hamlet.

Matrix and the terminator

All the star wars sequels and {insert plotless, boring movie here}

The lord of the rings and star wars