Video Editing
There are a lot of different video editing programs out there. Some are more professional and they come with a lot of functions that can be used to make high quality movies others are aimed at people who just wish to do simple edits to the videos of their children. Professional ones come with options to do transparencies, multiple tracks, a ton of filters, and ability to add in plugins(commercial and user). Simple editors just do the basic capturing/importing of the video from tape, cutting, moving, some filters, some transition effects, and exporting.
Two of the most popular high end editing programs are Adobe Premiere and Ulead's Media Studio Pro. Ulead's product is cheaper but more people make filters specifically for Premiere although many filters that can be used in one can be used in the other. I recommend either of these products if you want to do a lot of video editing and are serious about your work. Even more serious professionals would probably use this AND a lot of hardware equipment that is beyond many people's budget, well at least mine. One final note video editing on the computer is also called non-linear editing(NLE) because clips can be moved and edited at anytime.