For pro video editing!

This is really a tip oriented towards advanced users and video editors. It is actually a free set of plug-ins for Final Cut Pro and Final Cut Express. It is called the "Too Much Too Soon Plugins" and it is available for download here on MacUpdate. I think this set of plugin is really a great way of enhancing videos. There are tons of different plugins included. One of my favorite that was just added lately is the Slow Motion. The problem with a slow motion is that your camcorder usually only captures 30 frames per second. Slowing the whole thing down will really downgrade the quality. If you change the speed to 50, you'll really end up with only 15 frames per second. To use the slow motion plugin, you change the speed to 50% and you apply the plugin. According to the developer, this is what is done:

It will alternate between the fields creating the smoothest slow motion possible.

To install the "Too Much Too Soon Plugins", drag the folder that you downloaded to /Macintosh HD/Library/Application Support/Final Cut Pro System Support/Plugins. (It might be different for Final Cut Express).