Save2pc

Do you remember "Replay Media Catcher" ? It just had the ability to download 75% of every video on every site (the free version). If the site you are using for your videos is youtube.com, then Save2pc is a great idea. The free version downloads videos from youtube.com without limitations, like 75% or less. It's easy to use; you just need to copy the URL of a video and paste it on a gap that the program has and ...... wait until it's downloaded!!!! Videos are saved into .avi files, so you won't need an FLV player. Make sure you have the latest version of DivX.
Other versions of the program allow you to download videos from a wide variety of sites, including youtube.com, but still need that you pay some money......
To download the latest version of Save2pc Light (this is the free version) visit the following site: "http://www.save2pc.com/download.html" and press the "Save2pc Light" to start downloading. Save2pc Gold (the full version) is just above the light one.

By the way, if you don't know how to edit your videos (e.g. taking only some parts of it, adding some basic effects, ......) you can use Windows Movie Maker to do it, so if you only want a part of a video from youtube.com or just a part of a video that you have, you can do it this way:
1. Open Window Movie Maker and add a video to your "collection".
2. Take the whole video or the part of it that you want to edit. Drag it to the storyboard and then change it to the timeline mode
3. magnify the video to be able to cut the right part.
4. press and hold the left place of the video on the timeline and move it to the right until you find the place your video (the edited one) will start
5. press and hold the right place of the video on the timeline and move it to the left until you find the place your video (the edited one) will end.
6. Press : "File/Save movie file...." and not "File/Save project" and then follow the wizard's instructions to save it as a .wmv file. It can be played with W. Media Player and Winamp, as well.