Redgiant - makers of the famous Magic Bullet software - are giving away a free plugin called Colorista. The plugin is a simple and elegant colour correcting plugin for AfterEffects, Premiere Pro and Final Cut Pro.
It is in the form of 3 colour wheels which allow very quick and interactive colour correction and grading of your video clips. It also supports the industry standard Color Decision List (CDL) which lets you to share and communicate with other CDL-compliant applications and advantage over the commercial product Colorista II
The layout is reminicent of the colour ball controls that you get in a professional grading suite.
It's great that these companies release some very useful professional plugins that can be used for free... great for students or those on a tight budget.