What's the best way to add grain and noise to simulate a printed comic book look?

The 'Add Grain' effect in After Effects is a good starting point. Experiment with the 'Grain Amount,' 'Noise Type,' and 'Contrast' settings. Alternatively, you can import a noise texture (easily created in Photoshop) and apply blending modes like 'Overlay,' 'Soft Light,' or 'Multiply' to your footage. Adjust the opacity of the noise layer to fine-tune the effect.