Here's a list of the best video download tools for wYouTube, Facebook and websites in general:
RealPlayer for Mac: Free software that makes it easy to download multiple videos at a time.
Free You Tube Downloader: Saves YouTube videos in multiple video and audio formats. The software is able to download vidoes in high definition and standard.
Real Player: Offers 1 click download. Pop-up appears whenever a video starts to play prompting for video download.
YTD Video Downloader: Download ESPN videos, YouTube videos and video from other leading sites.
Cloud Based Video Download Tools:
KeepVid: Just paste the url of the video in the bar at the top of the page and click "download" to the immediate right of the box. Options to download video in MP4, FLV/Flash and WebM.
Clip Converter (highly recommended): Easy to use online tool for downloading and converting video to multiple video and audio formats.
Firefox Video Download Addon:
NetVideoHunter works with YouTube, Facebook and other leading video websites. The NetVideoHunter button is added to the browser and flashes when a video is available for download Using the add-on is as easy as "click and download"
Other Helpful Tools:
YouTube to MP3 Audio Extractor: Remove and download audio from YouTube videos. Software can download entire YouTube channels or playlists.