Grain ARRI Alexa is simulation of Alexa grain. It includes ISO value parameter.
Cheap Heal Brush tool handy for dust busting.
Simulates realistic heat distortion or underwater effect.
HeatWave is a gizmo created by Damian Binder that simulates realistic heat distortion you often see around fire or other sources of heat.
Converts Bump maps or Displacement maps to Tangent Normals using real displacement.
High Pass Sharpen Filter
Splits RGB and applies vector motion blur with custom shutter offsets
Updated version for Nuke 6: Blurs image with a fake Zdepth. Great to simulate a very short depth of field in regular footage.
A ramped blur and defocus based on a matte. Much like iBlur or iDefocus in Shake.
Yet another iblur node, But not only ;-)