From xilisoft.com:

Xilisoft Download YouTube Video is the most powerful free YouTube tool to get videos from YouTube.com and play the videos with built-in flv player. With its powerful and fast speed feature, you can easily download any video clips from YouTube and save it to computer. The wonderful program has more advanced feature as follows: *Key Features* 1. Xilisoft Download YouTube Video provides the fastest speed to download YouTube video beyond imagine because: 1) Offers multithreading; 2) Supports multiple tasks; 3) It could download. 2. Xilisoft Download YouTube Video offers you the most convenient task management and the easiest control capability, because: 1) Allows you to choose how to download YouTube videos: directly drag the video file to Drop Zone, drag URL to main window of software or copy URL to "New Task" dialog; 2) Provides advanced task management functions: you could add, stop and delete tasks freely; 3) More options are provided to adapt your habits: Specify the destination for the files; Rename the downloaded file; Set max simultaneous tasks; Set segments of each task; 3. Support multi-language. 4. Works perfect well under Windows Vista. 5. Xilisoft provides effective One Business Day Email service. Both registered and free trial customers are welcome to send emails to us. Xilisoft Download YouTube Video provides the fastest speed to download YouTube videos, offers you the most convenient task management and easiest control capability. Download the free Xilisoft Download YouTube Video and enjoy if right now! By the way, we have two more powerful YouTube tools to best suit more of your needs: Xilisoft YouTube Video Converter and Xilisoft YouTube to iPod Converter which is shareware. They provide "downloading + converting" one-step solution. You could easily download FLV videos from YouTube to play on your iPod, PSP, mobile phone, Apple TV, Zune, iPhone etc. Find more about them from our website at:www.xilisoft.com