I'm a fan of Portal. And its sequel. Here's how I show it. The turret was done in Maya, rendered out of Vray (with mixed results, as you can see). The Portal gun and laser cubes were done in C4D, rendered out of the software. I'm considering this a collection of assets for a work in progress. I'd like to make something actually fun to watch with the turret rig, but I'm not quite sure what that'll be yet.