YouTube changed the world, plain and simple. It made video an integral part of the Internet and it continues to give anyone and everyone a creative outlet. Careers have been launched on YouTube. Stars have been born on YouTube. Cats have done cute cat things on YouTube. The service is also like no other video platform that came before it in that it provides hours upon hours of free entertainment for viewers. But what if you want to save a few of those crazy cat videos locally on your computer so you can watch them over and over again with no buffering and no new ads?