Pixel Bender Accelerator (PBA) is a native After Effects plugin that runs Pixel Bender filters using the GPU of your video card.  Besides making them run very fast it also means you can run pixel bender files in CS6 and above!

Pixel Bender is a video processing language that allows for easy creation of image and video processing filters. You can use the Pixel Bender language to implement image processing algorithms (filters or effects) in a hardware-independent manner.