A new video network from the Indianapolis Museum of Art, ArtBabble presents video clips by artists, curators, and scholars that discuss the behind-the-scenes details of great works of art and new exhibitions. At launch they have clips from the Museum of Modern Art, The Louvre, the Smithsonian American Art Museum, and the Los Angeles County Museum of Art amongst other institutions. Yes, you can think of it as a YouTube for professional art, but without the option for anyone to upload. All other features are there including channels, user accounts, the ability to embed any of their videos into your site or blog. They also have a complete listing of the many artists featured throughout. 

Here's a piece from The Louvre titled "What You See Is What You Get" on the restoration of ancient pieces.