You want YouTube videos to be downloaded fast and easily, this is software for you called Movie Sherlock absolutely free.
It is a YouTube downloader and converter for the Mac OS X platform. It handles downloading for you efficiently by converting Youtube/vimeos/daily motions to your Mac format. You just have to type videos name in the search box and in a wink, MovieSherlock searches for the content in the YouTube and launches it in a player.
• Download any movie from YouTube and convert it on your Mac to a high-quality MP4 video that is playable in iTunes.
• If you have multiple downloads, Movie Sherlock acts as a download Manager.
• It automatically adds downloads to iTunes and converts audio-videos to MP3.
• MovieSherlock supports both HD (High Definition) and SD (Standard Definition) video from YouTube.