Plain and simple, Film Flash is an automated, dynamic preset for After Effects that bumps up the exposure of the footage to create a cool transition effects between two video clips.

Randomize values just in one direction, e.g. for a flickering exposure effect

A tool that lets you know which part of your picture is too bright or too dark by pointing the bad pixels directly on your footage. Similar to the way zebra-stripping works on digital cameras.

Film Burn is an Animation Preset that automatically creates the overexposed "roll-out" effect, where the tail (and the head if you want) of a clip flickers into overexposure. By Stu Maschwitz

A beautiful pack of Cinematic Presets for a bunch of different looks, free