Droid YouTube Downloader V4.6
Droid Youtube Downloader is a freeware for android phones and Tabs (Galaxy S, Nexus Prime, Galaxy Tab 10.1, Droid, Evo 4G ...)
It allows to search videos on YouTube or Dailymotion and download them on your phone or tab. You will be able to save as high quality video but also as audio (audio extraction from video).
it is very simple to use and download is fast.
Try it, it's free
You can use AppManager (available on the market) to install the APK.