I love fan-made films involving my favorite video games. There are a lot out there and I've seen most of them. Of the ones I've seen, a very small handful stand out and this is most certainly one of them. Visual proof that a Portal movie is possible with the right approach.

Portal: No Escape is a live action short created by dantrachtenberg1. It features a lady who apparently wakes up with no memory of what happened or how she got into the position she is in. The rest, doesn't really need explaining. Enjoy.