For beginning editors:

Windows Movie Maker 2.0 (comes with windows)

iMovie (comes with OSX) - Macs Only

For those who are intermediate or want to take this seriously:
Sony Vegas

Pinnacle

Adobe Premiere

Ulead Media Studio

For advanced editors, wannabe pros or the truly insane:
Adobe Premiere Pro

Adobe After Effects

Pinnacle Liquid Edition with AVID

An AVID editing System

Canopous Editing System

Final Cut Pro - Macs Only

Other programs one can use: this is for all levels of editing

Adobe Photoshop

Adobe Image Ready

Adobe Illustrator

MacroMedia Fireworks

MacroMedia Flash


Links coming soon.