From M5 Technology:
Accelerated Video Downloader's multi-thread engine allows you to accelerate over 200% of your downloading speed to grab your favorite HD and HQ downloads from multiple video sites.
It is an extremely fast and comprehensive video downloader and converter that supports many sites. The program is extremely easy to use just specify the URL for the video you want to download and click the download button. All you have to do is insert the URL and click Download.
It will convert your videos for iPad, iPod, iPhone, PSP, Cell Phone, Windows Media, and XVid formats. Fast Youtube Downloader also supports high quality and Full High Definition video.
Examples of supported Sites: Youtube Blip Ebaumsworld Dailymotion Bofunk Metacafe Redtube Break Bing Liveleak Myspace Dailyhaha Google Thatvideosite Funnyordie Badjojo Xhamster Videoclipsdump Videu Worldstarhiphop Yuvutu.