This tutorial demonstrates how to use Rgrain's film grain plates with Premiere Pro CS5. It works the same way with prior versions of Premiere Pro but might not be real-time without the Mercury Playback Engine.
The Rgrain plate used in this demo is the 35mm 500T and the film grain is lowered to 45% of opacity. This creates a very organic image and removes the digital "plastic" look. Subtle but very effective.
Visit rgrain.com for more information.