xVideoServiceThief 4

Main Features:
* Download Videos from a lot of important Web Video Services: YouTube, Google Videos, etc... (55 sites supported).
* Convert the downloaded videos to Mpeg, DivX, etc...
* Simultaneous downloads: Download more than one video at same time
* Pause and resume your downloads.
* Drag & Drop the Video Links directly to the xVideoServiceThief
* Automatic Updates! keep the xVideoServiceThief updated automatically.
* Option to use portable software with no installation.

Update: I tested the software and found it works better than I expected. Rating increased from 3 to 4.